diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 8e5936c5590cc6cf11a820389e5e77bf6cba993c..ae66ca4d9bb4473f92e7933045218cceb41ef7c8 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -6,6 +6,22 @@ All notable changes to this project will be documented in this file.
 The format is based on `Keep a Changelog`_,
 and this project adheres to `Semantic Versioning`_.
 
+`2.0`_ - 2021-10-30
+-------------------
+
+Changed
+~~~~~~~
+
+* Improve the formatting of the print version of the substitution plan
+  * Reduce the page margin.
+  * Reduce the space between the header and the heading.
+  * Display block of absences as a table.
+
+Fixed
+~~~~~
+
+* Do not show substitutions on regular timetables.
+
 `2.0rc3`_ - 2021-09-24
 ----------------------
 
@@ -211,3 +227,4 @@ Fixed
 .. _2.0rc1: https://edugit.org/AlekSIS/Official/AlekSIS-App-Chronos/-/tags/2.0rc1
 .. _2.0rc2: https://edugit.org/AlekSIS/Official/AlekSIS-App-Chronos/-/tags/2.0rc2
 .. _2.0rc3: https://edugit.org/AlekSIS/Official/AlekSIS-App-Chronos/-/tags/2.0rc3
+.. _2.0: https://edugit.org/AlekSIS/Official/AlekSIS-App-Chronos/-/tags/2.0
diff --git a/aleksis/apps/chronos/managers.py b/aleksis/apps/chronos/managers.py
index d03589aac4d36e1f640cff5e793a27cfdc0d6b52..b2f364c9cff65588650f983a230339e430b82fc1 100644
--- a/aleksis/apps/chronos/managers.py
+++ b/aleksis/apps/chronos/managers.py
@@ -319,7 +319,7 @@ class LessonDataQuerySet(models.QuerySet, WeekQuerySetMixin):
             | Q(**{self._period_path + "lesson__groups__parent_groups__in": groups})
         )
 
-    def filter_teacher(self, teacher: Union[Person, int]):
+    def filter_teacher(self, teacher: Union[Person, int], is_smart: bool = True):
         """Filter for all lessons given by a certain teacher."""
         qs1 = self.filter(**{self._period_path + "lesson__teachers": teacher})
         qs2 = self.filter(
@@ -330,9 +330,12 @@ class LessonDataQuerySet(models.QuerySet, WeekQuerySetMixin):
             }
         )
 
-        return qs1.union(qs2)
+        if is_smart:
+            return qs1.union(qs2)
+        else:
+            return qs1
 
-    def filter_room(self, room: Union["Room", int]):
+    def filter_room(self, room: Union["Room", int], is_smart: bool = True):
         """Filter for all lessons taking part in a certain room."""
         qs1 = self.filter(**{self._period_path + "room": room})
         qs2 = self.filter(
@@ -343,18 +346,21 @@ class LessonDataQuerySet(models.QuerySet, WeekQuerySetMixin):
             }
         )
 
-        return qs1.union(qs2)
+        if is_smart:
+            return qs1.union(qs2)
+        else:
+            return qs1
 
     def filter_from_type(
-        self, type_: TimetableType, obj: Union[Person, Group, "Room", int]
+        self, type_: TimetableType, obj: Union[Person, Group, "Room", int], is_smart: bool = True
     ) -> Optional[models.QuerySet]:
         """Filter lesson data for a group, teacher or room by provided type."""
         if type_ == TimetableType.GROUP:
             return self.filter_group(obj)
         elif type_ == TimetableType.TEACHER:
-            return self.filter_teacher(obj)
+            return self.filter_teacher(obj, is_smart=is_smart)
         elif type_ == TimetableType.ROOM:
-            return self.filter_room(obj)
+            return self.filter_room(obj, is_smart=is_smart)
         else:
             return None
 
diff --git a/aleksis/apps/chronos/static/css/chronos/timetable.css b/aleksis/apps/chronos/static/css/chronos/timetable.css
index bbdbb5b82c664ca908c2cd2088188c0a64395716..df0286b663f0d6b10aa00ef5880d959d7f22c46c 100644
--- a/aleksis/apps/chronos/static/css/chronos/timetable.css
+++ b/aleksis/apps/chronos/static/css/chronos/timetable.css
@@ -103,8 +103,9 @@ table.substitutions td, table.substitutions th {
     width: 30%;
 }
 
+
 .print-body table.substitutions td, .print-body table.substitutions th {
-    padding: 0 2px;
+    padding: 0;
 }
 
 .print-body span.badge.new {
@@ -138,3 +139,24 @@ table.substitutions td, table.substitutions th {
 .holiday-card .holiday-badge {
     margin-top: 0;
 }
+
+@media print {
+    header {
+        width: 200mm;
+        top: 5mm;
+    }
+
+    .header-space {
+        height: 30mm;
+    }
+
+    .sheet {
+        padding: 5mm;
+    }
+
+    .print-layout-table, .print-layout-table > td {
+        width: 200mm;
+        max-width: 200mm;
+        min-width: 200mm;
+    }
+}
diff --git a/aleksis/apps/chronos/templates/chronos/partials/headerbox.html b/aleksis/apps/chronos/templates/chronos/partials/headerbox.html
index d298d5fc6faecec81be8f7fc48996cc777470290..1ed1e7de07cdcf64b2afea35f93f40b74aca9bd2 100644
--- a/aleksis/apps/chronos/templates/chronos/partials/headerbox.html
+++ b/aleksis/apps/chronos/templates/chronos/partials/headerbox.html
@@ -5,48 +5,48 @@
     <div class="{% if not print %}card-content{% endif %}">
       {% if absent_teachers %}
         <div class="row no-margin">
-          <div class="col s12 m3">
+          <div class="col {% if not print %}s12 m3{% else %}s3{% endif %}">
             <strong class="truncate">
               {% trans "Absent teachers" %}
             </strong>
           </div>
-          <div class="col s12 m9 black-text-a">
+          <div class="col {% if not print %}s12 m9{% else %}s9{% endif %} black-text-a">
             {% include "chronos/partials/teachers.html" with teachers=absent_teachers %}
           </div>
         </div>
       {% endif %}
       {% if absent_groups %}
         <div class="row no-margin">
-          <div class="col s12 m3">
+          <div class="col {% if not print %}s12 m3{% else %}s3{% endif %}">
             <strong class="truncate">
               {% trans "Absent groups" %}
             </strong>
           </div>
-          <div class="col s12 m9 black-text-a">
+          <div class="col {% if not print %}s12 m9{% else %}s9{% endif %} black-text-a">
             {% include "chronos/partials/groups.html" with groups=absent_groups no_collapsible=True %}
           </div>
         </div>
       {% endif %}
       {% if affected_teachers %}
         <div class="row no-margin">
-          <div class="col s12 m3">
+          <div class="col {% if not print %}s12 m3{% else %}s3{% endif %}">
             <strong class="truncate">
               {% trans "Affected teachers" %}
             </strong>
           </div>
-          <div class="col s12 m9 black-text-a">
+          <div class="col {% if not print %}s12 m9{% else %}s9{% endif %} black-text-a">
             {% include "chronos/partials/teachers.html" with teachers=affected_teachers %}
           </div>
         </div>
       {% endif %}
       {% if affected_groups %}
         <div class="row no-margin">
-          <div class="col s12 m3">
+          <div class="col {% if not print %}s12 m3{% else %}s3{% endif %}">
             <strong class="truncate">
               {% trans "Affected groups" %}
             </strong>
           </div>
-          <div class="col s12 m9 black-text-a">
+          <div class="col {% if not print %}s12 m9{% else %}s9{% endif %} black-text-a">
             {% include "chronos/partials/groups.html" with groups=affected_groups no_collapsible=True %}
           </div>
         </div>
diff --git a/aleksis/apps/chronos/templates/chronos/substitutions_print.html b/aleksis/apps/chronos/templates/chronos/substitutions_print.html
index adfdfebe7362e3dab8fc901ba7ec828f241b1f83..c94a512512ea94e6146f05a84118a531c4e3c854 100644
--- a/aleksis/apps/chronos/templates/chronos/substitutions_print.html
+++ b/aleksis/apps/chronos/templates/chronos/substitutions_print.html
@@ -14,7 +14,7 @@
 
 {% block content %}
   {% for day, c in days.items %}
-    <h4>{% trans "Substitutions" %} {{ c.day|date:"l" }} {{ c.day }}</h4>
+    <h4>{{ c.day|date:"l" }} {{ c.day|date:"SHORT_DATE_FORMAT" }}</h4>
 
     {% include "core/partials/announcements.html" with announcements=announcements show_recipients=1 %}
 
diff --git a/aleksis/apps/chronos/util/build.py b/aleksis/apps/chronos/util/build.py
index d2f7214826fec61b3351758231cadfcf1194bed0..5ae3341f70638a7bbdc81c1841d22155541b608f 100644
--- a/aleksis/apps/chronos/util/build.py
+++ b/aleksis/apps/chronos/util/build.py
@@ -76,7 +76,7 @@ def build_timetable(
     if is_person:
         lesson_periods = lesson_periods.filter_from_person(obj)
     else:
-        lesson_periods = lesson_periods.filter_from_type(type_, obj)
+        lesson_periods = lesson_periods.filter_from_type(type_, obj, is_smart=with_holidays)
 
     # Sort lesson periods in a dict
     lesson_periods_per_period = lesson_periods.group_by_periods(is_week=is_week)
diff --git a/fixtures/highschool-de-20212022.json b/fixtures/highschool-de-20212022.json
new file mode 100644
index 0000000000000000000000000000000000000000..6a9adb3a200297e876d2c81eb635ed3af048d988
--- /dev/null
+++ b/fixtures/highschool-de-20212022.json
@@ -0,0 +1,182179 @@
+[
+    {
+        "model": "auth.group",
+        "pk": 8,
+        "fields": {
+            "name": "5a",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 9,
+        "fields": {
+            "name": "5b",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 10,
+        "fields": {
+            "name": "5c",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 11,
+        "fields": {
+            "name": "5d",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 12,
+        "fields": {
+            "name": "6a",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 13,
+        "fields": {
+            "name": "6b",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 14,
+        "fields": {
+            "name": "6c",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 15,
+        "fields": {
+            "name": "6d",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 16,
+        "fields": {
+            "name": "7a",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 17,
+        "fields": {
+            "name": "7b",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 18,
+        "fields": {
+            "name": "7c",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 19,
+        "fields": {
+            "name": "7d",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 20,
+        "fields": {
+            "name": "8a",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 21,
+        "fields": {
+            "name": "8b",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 22,
+        "fields": {
+            "name": "8c",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 23,
+        "fields": {
+            "name": "8d",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 24,
+        "fields": {
+            "name": "9a",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 25,
+        "fields": {
+            "name": "9b",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 26,
+        "fields": {
+            "name": "9c",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 27,
+        "fields": {
+            "name": "9d",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 28,
+        "fields": {
+            "name": "Ea",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 29,
+        "fields": {
+            "name": "Eb",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 30,
+        "fields": {
+            "name": "Ec",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 31,
+        "fields": {
+            "name": "Ed",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 32,
+        "fields": {
+            "name": "Q2a",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 33,
+        "fields": {
+            "name": "Q2b",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 34,
+        "fields": {
+            "name": "Q2c",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 35,
+        "fields": {
+            "name": "Q2d",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 36,
+        "fields": {
+            "name": "Q1a",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 37,
+        "fields": {
+            "name": "Q1b",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 38,
+        "fields": {
+            "name": "Q1c",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 39,
+        "fields": {
+            "name": "Q1d",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 40,
+        "fields": {
+            "name": "8d: Ma",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 41,
+        "fields": {
+            "name": "8b: En2",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 42,
+        "fields": {
+            "name": "8d: En1",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 43,
+        "fields": {
+            "name": "8d: De",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 44,
+        "fields": {
+            "name": "8a: La1",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 45,
+        "fields": {
+            "name": "8b: De",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 46,
+        "fields": {
+            "name": "8d: Ek",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 47,
+        "fields": {
+            "name": "8a: Ma",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 48,
+        "fields": {
+            "name": "7c: De",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 49,
+        "fields": {
+            "name": "7c: En1",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 50,
+        "fields": {
+            "name": "7c: Ma",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 51,
+        "fields": {
+            "name": "7c: Ku",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 52,
+        "fields": {
+            "name": "7a: De",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 53,
+        "fields": {
+            "name": "7a: La1",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 54,
+        "fields": {
+            "name": "7a: Ma",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 55,
+        "fields": {
+            "name": "7b: De",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 56,
+        "fields": {
+            "name": "6d: Re",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 57,
+        "fields": {
+            "name": "6d: De",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 58,
+        "fields": {
+            "name": "6d: Mu",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 59,
+        "fields": {
+            "name": "6c: Mu",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 60,
+        "fields": {
+            "name": "6c: De",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 61,
+        "fields": {
+            "name": "7d: De",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 62,
+        "fields": {
+            "name": "7d: Ku",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 63,
+        "fields": {
+            "name": "6c: En1",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 64,
+        "fields": {
+            "name": "7d: Mu",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 65,
+        "fields": {
+            "name": "7a: Ku",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 66,
+        "fields": {
+            "name": "7b: Ku",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 67,
+        "fields": {
+            "name": "8b: Bi",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 68,
+        "fields": {
+            "name": "8c: De",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 69,
+        "fields": {
+            "name": "8c: Ma",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 70,
+        "fields": {
+            "name": "8c: En1",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 71,
+        "fields": {
+            "name": "8c: Bi",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 72,
+        "fields": {
+            "name": "8c: Sp",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 73,
+        "fields": {
+            "name": "7a: En2",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 74,
+        "fields": {
+            "name": "7a: Mu",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 75,
+        "fields": {
+            "name": "7b: Mu",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 76,
+        "fields": {
+            "name": "Q2a: DE",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 77,
+        "fields": {
+            "name": "Q1b: Ge",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 78,
+        "fields": {
+            "name": "Q1b: Sp",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 79,
+        "fields": {
+            "name": ": CAG",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 80,
+        "fields": {
+            "name": "7a: Bi",
+            "permissions": []
+        }
+    },
+    {
+        "model": "auth.group",
+        "pk": 81,
+        "fields": {
+            "name": "7d: Bi",
+            "permissions": []
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+            "title": "UB",
+            "date_start": "2021-10-20",
+            "date_end": "2021-10-20",
+            "period_from": 200,
+            "period_to": 200,
+            "groups": [
+                18
+            ],
+            "rooms": [
+                96
+            ],
+            "teachers": [
+                120,
+                128
+            ]
+        }
+    },
+    {
+        "model": "chronos.event",
+        "pk": 122,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 124
+            },
+            "school_term": 1,
+            "title": "UB Besprechung",
+            "date_start": "2021-10-20",
+            "date_end": "2021-10-20",
+            "period_from": 201,
+            "period_to": 201,
+            "groups": [],
+            "rooms": [
+                96
+            ],
+            "teachers": [
+                120,
+                128
+            ]
+        }
+    },
+    {
+        "model": "chronos.event",
+        "pk": 123,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 127
+            },
+            "school_term": 1,
+            "title": "Erlebnisp\u00e4d. Tag",
+            "date_start": "2021-10-25",
+            "date_end": "2021-10-25",
+            "period_from": 181,
+            "period_to": 189,
+            "groups": [
+                14
+            ],
+            "rooms": [],
+            "teachers": [
+                83,
+                90
+            ]
+        }
+    },
+    {
+        "model": "chronos.event",
+        "pk": 124,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 128
+            },
+            "school_term": 1,
+            "title": "Erlebnisp\u00e4d. Tag",
+            "date_start": "2021-10-29",
+            "date_end": "2021-10-29",
+            "period_from": 217,
+            "period_to": 225,
+            "groups": [
+                12
+            ],
+            "rooms": [],
+            "teachers": [
+                95,
+                103
+            ]
+        }
+    },
+    {
+        "model": "chronos.event",
+        "pk": 125,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 129
+            },
+            "school_term": 1,
+            "title": "Erlebnisp\u00e4d. Tag",
+            "date_start": "2021-10-26",
+            "date_end": "2021-10-26",
+            "period_from": 190,
+            "period_to": 198,
+            "groups": [
+                13
+            ],
+            "rooms": [],
+            "teachers": [
+                118,
+                105
+            ]
+        }
+    },
+    {
+        "model": "chronos.event",
+        "pk": 126,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 131
+            },
+            "school_term": 1,
+            "title": "Kantorat",
+            "date_start": "2021-10-18",
+            "date_end": "2021-10-18",
+            "period_from": 182,
+            "period_to": 186,
+            "groups": [],
+            "rooms": [
+                132
+            ],
+            "teachers": [
+                91
+            ]
+        }
+    },
+    {
+        "model": "chronos.event",
+        "pk": 127,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 132
+            },
+            "school_term": 1,
+            "title": "Kantorat",
+            "date_start": "2021-10-19",
+            "date_end": "2021-10-19",
+            "period_from": 191,
+            "period_to": 191,
+            "groups": [],
+            "rooms": [
+                132
+            ],
+            "teachers": [
+                91
+            ]
+        }
+    },
+    {
+        "model": "chronos.event",
+        "pk": 128,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 133
+            },
+            "school_term": 1,
+            "title": "Ext. Latinum",
+            "date_start": "2021-10-18",
+            "date_end": "2021-10-18",
+            "period_from": 181,
+            "period_to": 181,
+            "groups": [],
+            "rooms": [
+                105
+            ],
+            "teachers": [
+                137
+            ]
+        }
+    },
+    {
+        "model": "chronos.event",
+        "pk": 129,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 134
+            },
+            "school_term": 1,
+            "title": "Ext. Latinum",
+            "date_start": "2021-10-18",
+            "date_end": "2021-10-18",
+            "period_from": 183,
+            "period_to": 183,
+            "groups": [],
+            "rooms": [
+                105
+            ],
+            "teachers": [
+                132
+            ]
+        }
+    },
+    {
+        "model": "chronos.event",
+        "pk": 130,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 135
+            },
+            "school_term": 1,
+            "title": "Ext. Latinum",
+            "date_start": "2021-10-18",
+            "date_end": "2021-10-18",
+            "period_from": 184,
+            "period_to": 184,
+            "groups": [],
+            "rooms": [
+                105
+            ],
+            "teachers": [
+                119
+            ]
+        }
+    },
+    {
+        "model": "chronos.event",
+        "pk": 131,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 136
+            },
+            "school_term": 1,
+            "title": "Ext. Latinum",
+            "date_start": "2021-10-18",
+            "date_end": "2021-10-18",
+            "period_from": 182,
+            "period_to": 182,
+            "groups": [],
+            "rooms": [
+                105
+            ],
+            "teachers": [
+                112
+            ]
+        }
+    },
+    {
+        "model": "chronos.event",
+        "pk": 132,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 137
+            },
+            "school_term": 1,
+            "title": "UB",
+            "date_start": "2021-10-25",
+            "date_end": "2021-10-25",
+            "period_from": 186,
+            "period_to": 186,
+            "groups": [
+                19
+            ],
+            "rooms": [
+                102
+            ],
+            "teachers": [
+                130,
+                89,
+                129,
+                98,
+                131,
+                128
+            ]
+        }
+    },
+    {
+        "model": "chronos.event",
+        "pk": 133,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 138
+            },
+            "school_term": 1,
+            "title": "UB Besprechung",
+            "date_start": "2021-10-25",
+            "date_end": "2021-10-25",
+            "period_from": 187,
+            "period_to": 187,
+            "groups": [],
+            "rooms": [
+                105
+            ],
+            "teachers": [
+                130,
+                89,
+                129,
+                98,
+                131
+            ]
+        }
+    },
+    {
+        "model": "chronos.event",
+        "pk": 134,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 140
+            },
+            "school_term": 1,
+            "title": "Modul",
+            "date_start": "2021-10-20",
+            "date_end": "2021-10-20",
+            "period_from": 202,
+            "period_to": 207,
+            "groups": [],
+            "rooms": [
+                96
+            ],
+            "teachers": [
+                128
+            ]
+        }
+    },
+    {
+        "model": "chronos.event",
+        "pk": 135,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 141
+            },
+            "school_term": 1,
+            "title": "Wandertag",
+            "date_start": "2021-10-27",
+            "date_end": "2021-10-27",
+            "period_from": 199,
+            "period_to": 207,
+            "groups": [
+                20
+            ],
+            "rooms": [],
+            "teachers": [
+                119
+            ]
+        }
+    },
+    {
+        "model": "chronos.event",
+        "pk": 136,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 145
+            },
+            "school_term": 1,
+            "title": "Sponsorenlauf",
+            "date_start": "2021-10-21",
+            "date_end": "2021-10-21",
+            "period_from": 208,
+            "period_to": 209,
+            "groups": [
+                32,
+                33,
+                34,
+                35
+            ],
+            "rooms": [
+                142
+            ],
+            "teachers": []
+        }
+    },
+    {
+        "model": "chronos.extralesson",
+        "pk": 1,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 1483
+            },
+            "school_term": 1,
+            "week": 35,
+            "year": 2021,
+            "period": 106,
+            "subject": 203,
+            "room": 129,
+            "comment": "statt 8. Std.",
+            "groups": [
+                18
+            ],
+            "teachers": [
+                115
+            ]
+        }
+    },
+    {
+        "model": "chronos.extralesson",
+        "pk": 7,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 2927
+            },
+            "school_term": 1,
+            "week": 37,
+            "year": 2021,
+            "period": 191,
+            "subject": 126,
+            "room": 95,
+            "comment": "Klausur",
+            "groups": [
+                33
+            ],
+            "teachers": [
+                108
+            ]
+        }
+    },
+    {
+        "model": "chronos.extralesson",
+        "pk": 8,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 2930
+            },
+            "school_term": 1,
+            "week": 37,
+            "year": 2021,
+            "period": 190,
+            "subject": 126,
+            "room": 95,
+            "comment": "Klausur",
+            "groups": [
+                33
+            ],
+            "teachers": [
+                108
+            ]
+        }
+    },
+    {
+        "model": "chronos.extralesson",
+        "pk": 9,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 2931
+            },
+            "school_term": 1,
+            "week": 37,
+            "year": 2021,
+            "period": 190,
+            "subject": 126,
+            "room": 95,
+            "comment": "Klausur",
+            "groups": [
+                32
+            ],
+            "teachers": [
+                108
+            ]
+        }
+    },
+    {
+        "model": "chronos.extralesson",
+        "pk": 10,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 2934
+            },
+            "school_term": 1,
+            "week": 37,
+            "year": 2021,
+            "period": 191,
+            "subject": 126,
+            "room": 95,
+            "comment": "Klausur",
+            "groups": [
+                32
+            ],
+            "teachers": [
+                108
+            ]
+        }
+    },
+    {
+        "model": "chronos.extralesson",
+        "pk": 11,
+        "fields": {
+            "site": 1,
+            "extended_data": {
+                "import_ref_untis": 3060
+            },
+            "school_term": 1,
+            "week": 38,
+            "year": 2021,
+            "period": 212,
+            "subject": 188,
+            "room": 116,
+            "comment": "Klausur",
+            "groups": [
+                36
+            ],
+            "teachers": [
+                91
+            ]
+        }
+    }
+]
diff --git a/poetry.lock b/poetry.lock
index cacb42208fb45c46a85378f2b0f845bfa19b827d..3ecc1c66469dac5d3cacc775eb8c22d949b3e5d4 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -49,7 +49,7 @@ reference = "gitlab"
 
 [[package]]
 name = "aleksis-core"
-version = "2.1.dev0+20210924141832.35943230"
+version = "2.0+20211029195856.5f016bc6"
 description = "AlekSIS (School Information System) — Core"
 category = "main"
 optional = false
@@ -76,12 +76,11 @@ django-cleanup = ">=5.1.0,<6.0.0"
 django-colorfield = ">=0.4.0,<0.5.0"
 django-dbbackup = ">=3.3.0,<4.0.0"
 django-debug-toolbar = ">=3.2,<4.0"
-django-dynamic-preferences = ">=1.9,<2.0"
+django-dynamic-preferences = ">=1.11,<2.0"
 django-extensions = ">=3.1.1,<4.0.0"
 django-favicon-plus-reloaded = ">=1.1.2,<2.0.0"
 django-filter = ">=2.2.0,<3.0.0"
 django-guardian = ">=2.2.0,<3.0.0"
-django-hattori = ">=0.2,<0.3"
 django-haystack = "3.0"
 django-health-check = ">=3.12.1,<4.0.0"
 django-impersonate = ">=1.4,<2.0"
@@ -93,12 +92,12 @@ django-material = ">=1.6.0,<2.0.0"
 django-menu-generator-ng = ">=1.2.3,<2.0.0"
 django-model-utils = ">=4.0.0,<5.0.0"
 django-oauth-toolkit = ">=1.5.0,<2.0.0"
-django-phonenumber-field = {version = "<5.3", extras = ["phonenumbers"]}
+django-phonenumber-field = {version = ">=5.2,<6.0", extras = ["phonenumbers"]}
 django-polymorphic = ">=3.0.0,<4.0.0"
 django-prometheus = ">=2.1.0,<3.0.0"
 django-redis = ">=5.0.0,<6.0.0"
 django-reversion = ">=4.0.0,<5.0.0"
-django-sass-processor = ">=1.0,<2.0"
+django-sass-processor = "1.0"
 django_select2 = ">=7.1,<8.0"
 django-tables2 = ">=2.1,<3.0"
 django-templated-email = ">=3.0.0,<4.0.0"
@@ -399,7 +398,7 @@ websockets = ["channels"]
 
 [[package]]
 name = "certifi"
-version = "2021.5.30"
+version = "2021.10.8"
 description = "Python package for providing Mozilla's CA Bundle."
 category = "main"
 optional = false
@@ -407,7 +406,7 @@ python-versions = "*"
 
 [[package]]
 name = "cffi"
-version = "1.14.6"
+version = "1.15.0"
 description = "Foreign Function Interface for Python calling C code."
 category = "main"
 optional = false
@@ -418,7 +417,7 @@ pycparser = "*"
 
 [[package]]
 name = "charset-normalizer"
-version = "2.0.6"
+version = "2.0.7"
 description = "The Real First Universal Charset Detector. Open, modern and actively maintained alternative to Chardet."
 category = "main"
 optional = false
@@ -437,14 +436,14 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [[package]]
 name = "click-didyoumean"
-version = "0.0.3"
-description = "Enable git-like did-you-mean feature in click."
+version = "0.3.0"
+description = "Enables git-like *did-you-mean* feature in click"
 category = "main"
 optional = false
-python-versions = "*"
+python-versions = ">=3.6.2,<4.0.0"
 
 [package.dependencies]
-click = "*"
+click = ">=7"
 
 [[package]]
 name = "click-plugins"
@@ -505,18 +504,18 @@ six = "*"
 
 [[package]]
 name = "coverage"
-version = "5.5"
+version = "6.1"
 description = "Code coverage measurement for Python"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
+python-versions = ">=3.6"
 
 [package.extras]
-toml = ["toml"]
+toml = ["tomli"]
 
 [[package]]
 name = "cryptography"
-version = "3.4.8"
+version = "35.0.0"
 description = "cryptography is a package which provides cryptographic recipes and primitives to Python developers."
 category = "main"
 optional = false
@@ -529,9 +528,9 @@ cffi = ">=1.12"
 docs = ["sphinx (>=1.6.5,!=1.8.0,!=3.1.0,!=3.1.1)", "sphinx-rtd-theme"]
 docstest = ["doc8", "pyenchant (>=1.6.11)", "twine (>=1.12.0)", "sphinxcontrib-spelling (>=4.0.1)"]
 pep8test = ["black", "flake8", "flake8-import-order", "pep8-naming"]
-sdist = ["setuptools-rust (>=0.11.4)"]
+sdist = ["setuptools_rust (>=0.11.4)"]
 ssh = ["bcrypt (>=3.1.5)"]
-test = ["pytest (>=6.0)", "pytest-cov", "pytest-subtests", "pytest-xdist", "pretend", "iso8601", "pytz", "hypothesis (>=1.11.4,!=3.79.2)"]
+test = ["pytest (>=6.2.0)", "pytest-cov", "pytest-subtests", "pytest-xdist", "pretend", "iso8601", "pytz", "hypothesis (>=1.11.4,!=3.79.2)"]
 
 [[package]]
 name = "curlylint"
@@ -591,7 +590,7 @@ python-versions = "*"
 
 [[package]]
 name = "django"
-version = "3.2.7"
+version = "3.2.8"
 description = "A high-level Python Web framework that encourages rapid development and clean, pragmatic design."
 category = "main"
 optional = false
@@ -655,17 +654,6 @@ python-versions = "*"
 bleach = ">=1.5.0"
 Django = ">=1.11"
 
-[[package]]
-name = "django-bulk-update"
-version = "2.2.0"
-description = "Bulk update using one query over Django ORM."
-category = "main"
-optional = false
-python-versions = "*"
-
-[package.dependencies]
-Django = ">=1.8"
-
 [[package]]
 name = "django-cachalot"
 version = "2.4.3"
@@ -747,7 +735,7 @@ python-versions = "*"
 
 [[package]]
 name = "django-colorfield"
-version = "0.4.3"
+version = "0.4.5"
 description = "simple color field for your models with a nice color-picker in the admin-interface."
 category = "main"
 optional = false
@@ -780,7 +768,7 @@ sqlparse = ">=0.2.0"
 
 [[package]]
 name = "django-dynamic-preferences"
-version = "1.10.1"
+version = "1.11.0"
 description = "Dynamic global and instance settings for your django project"
 category = "main"
 optional = false
@@ -847,21 +835,6 @@ python-versions = ">=3.5"
 [package.dependencies]
 Django = ">=2.2"
 
-[[package]]
-name = "django-hattori"
-version = "0.2.1"
-description = "Command to anonymize sensitive data."
-category = "main"
-optional = false
-python-versions = "*"
-
-[package.dependencies]
-Django = ">=1.8"
-django-bulk-update = ">=2.2.0"
-Faker = ">=0.8.13"
-six = "*"
-tqdm = ">=4.23.4"
-
 [[package]]
 name = "django-haystack"
 version = "3.0"
@@ -960,7 +933,7 @@ python-versions = "*"
 
 [[package]]
 name = "django-model-utils"
-version = "4.1.1"
+version = "4.2.0"
 description = "Django model mixins and utilities"
 category = "main"
 optional = false
@@ -1084,7 +1057,7 @@ django = ">=2.0"
 
 [[package]]
 name = "django-sass-processor"
-version = "1.0.1"
+version = "1.0.0"
 description = "SASS processor to compile SCSS files into *.css, while rendering, or offline."
 category = "main"
 optional = false
@@ -1095,7 +1068,7 @@ management_command = ["django-compressor (>=2.4)"]
 
 [[package]]
 name = "django-select2"
-version = "7.7.2"
+version = "7.7.3"
 description = "Select2 option fields for Django"
 category = "main"
 optional = false
@@ -1139,7 +1112,7 @@ typing-extensions = "*"
 
 [[package]]
 name = "django-tables2"
-version = "2.4.0"
+version = "2.4.1"
 description = "Table/data-grid framework for Django"
 category = "main"
 optional = false
@@ -1226,7 +1199,7 @@ uwsgi = ["uwsgi"]
 
 [[package]]
 name = "django-widget-tweaks"
-version = "1.4.8"
+version = "1.4.9"
 description = "Tweak the form field rendering in templates, not in python-level form definitions."
 category = "main"
 optional = false
@@ -1301,18 +1274,6 @@ toml = ["toml"]
 vault = ["hvac"]
 yaml = ["ruamel.yaml"]
 
-[[package]]
-name = "faker"
-version = "8.14.0"
-description = "Faker is a Python package that generates fake data for you."
-category = "main"
-optional = false
-python-versions = ">=3.6"
-
-[package.dependencies]
-python-dateutil = ">=2.4"
-text-unidecode = "1.3"
-
 [[package]]
 name = "flake8"
 version = "3.9.2"
@@ -1400,19 +1361,19 @@ python-versions = "*"
 
 [[package]]
 name = "flake8-isort"
-version = "4.0.0"
+version = "4.1.1"
 description = "flake8 plugin that integrates isort ."
 category = "dev"
 optional = false
 python-versions = "*"
 
 [package.dependencies]
-flake8 = ">=3.2.1,<4"
+flake8 = ">=3.2.1,<5"
 isort = ">=4.3.5,<6"
 testfixtures = ">=6.8.0,<7"
 
 [package.extras]
-test = ["pytest (>=4.0.2,<6)", "toml"]
+test = ["pytest-cov"]
 
 [[package]]
 name = "flake8-mypy"
@@ -1464,14 +1425,14 @@ python-dateutil = ">=2.7"
 
 [[package]]
 name = "gitdb"
-version = "4.0.7"
+version = "4.0.9"
 description = "Git Object Database"
 category = "dev"
 optional = false
-python-versions = ">=3.4"
+python-versions = ">=3.6"
 
 [package.dependencies]
-smmap = ">=3.0.1,<5"
+smmap = ">=3.0.1,<6"
 
 [[package]]
 name = "gitpython"
@@ -1508,7 +1469,7 @@ python-versions = ">=3.5"
 
 [[package]]
 name = "idna"
-version = "3.2"
+version = "3.3"
 description = "Internationalized Domain Names in Applications (IDNA)"
 category = "main"
 optional = false
@@ -1532,7 +1493,7 @@ python-versions = "*"
 
 [[package]]
 name = "ipython"
-version = "7.27.0"
+version = "7.29.0"
 description = "IPython: Productive Interactive Computing"
 category = "main"
 optional = false
@@ -1593,7 +1554,7 @@ testing = ["Django (<3.1)", "colorama", "docopt", "pytest (<6.0.0)"]
 
 [[package]]
 name = "jinja2"
-version = "3.0.1"
+version = "3.0.2"
 description = "A very fast and expressive template engine."
 category = "dev"
 optional = false
@@ -1734,14 +1695,14 @@ signedtoken = ["cryptography (>=3.0.0,<4)", "pyjwt (>=2.0.0,<3)"]
 
 [[package]]
 name = "packaging"
-version = "21.0"
+version = "21.2"
 description = "Core utilities for Python packages"
 category = "main"
 optional = false
 python-versions = ">=3.6"
 
 [package.dependencies]
-pyparsing = ">=2.0.2"
+pyparsing = ">=2.0.2,<3"
 
 [[package]]
 name = "parso"
@@ -1800,7 +1761,7 @@ ptyprocess = ">=0.5"
 
 [[package]]
 name = "pg8000"
-version = "1.21.2"
+version = "1.22.0"
 description = "PostgreSQL interface library"
 category = "dev"
 optional = false
@@ -1811,7 +1772,7 @@ scramp = ">=1.4.1"
 
 [[package]]
 name = "phonenumbers"
-version = "8.12.33"
+version = "8.12.36"
 description = "Python version of Google's common library for parsing, formatting, storing and validating international phone numbers."
 category = "main"
 optional = false
@@ -1827,7 +1788,7 @@ python-versions = "*"
 
 [[package]]
 name = "pillow"
-version = "8.3.2"
+version = "8.4.0"
 description = "Python Imaging Library (Fork)"
 category = "main"
 optional = false
@@ -1847,7 +1808,7 @@ testing = ["pytest", "pytest-benchmark"]
 
 [[package]]
 name = "prometheus-client"
-version = "0.11.0"
+version = "0.12.0"
 description = "Python client for the Prometheus monitoring system."
 category = "main"
 optional = false
@@ -1858,7 +1819,7 @@ twisted = ["twisted"]
 
 [[package]]
 name = "prompt-toolkit"
-version = "3.0.20"
+version = "3.0.21"
 description = "Library for building powerful interactive command lines in Python"
 category = "main"
 optional = false
@@ -1920,7 +1881,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [[package]]
 name = "pycryptodome"
-version = "3.10.1"
+version = "3.11.0"
 description = "Cryptographic library for Python"
 category = "main"
 optional = false
@@ -1958,18 +1919,18 @@ python-versions = ">=3.5"
 
 [[package]]
 name = "pyjwt"
-version = "2.1.0"
+version = "2.3.0"
 description = "JSON Web Token implementation in Python"
 category = "main"
 optional = false
 python-versions = ">=3.6"
 
 [package.dependencies]
-cryptography = {version = ">=3.3.1,<4.0.0", optional = true, markers = "extra == \"crypto\""}
+cryptography = {version = ">=3.3.1", optional = true, markers = "extra == \"crypto\""}
 
 [package.extras]
-crypto = ["cryptography (>=3.3.1,<4.0.0)"]
-dev = ["sphinx", "sphinx-rtd-theme", "zope.interface", "cryptography (>=3.3.1,<4.0.0)", "pytest (>=6.0.0,<7.0.0)", "coverage[toml] (==5.0.4)", "mypy", "pre-commit"]
+crypto = ["cryptography (>=3.3.1)"]
+dev = ["sphinx", "sphinx-rtd-theme", "zope.interface", "cryptography (>=3.3.1)", "pytest (>=6.0.0,<7.0.0)", "coverage[toml] (==5.0.4)", "mypy", "pre-commit"]
 docs = ["sphinx", "sphinx-rtd-theme", "zope.interface"]
 tests = ["pytest (>=6.0.0,<7.0.0)", "coverage[toml] (==5.0.4)"]
 
@@ -2060,7 +2021,7 @@ termcolor = ">=1.1.0"
 
 [[package]]
 name = "python-crontab"
-version = "2.5.1"
+version = "2.6.0"
 description = "Python Crontab API"
 category = "main"
 optional = false
@@ -2109,7 +2070,7 @@ postgresql = ["psycopg2"]
 
 [[package]]
 name = "pytz"
-version = "2021.1"
+version = "2021.3"
 description = "World timezone definitions, modern and historical"
 category = "main"
 optional = false
@@ -2117,11 +2078,11 @@ python-versions = "*"
 
 [[package]]
 name = "pyyaml"
-version = "5.4.1"
+version = "6.0"
 description = "YAML parser and emitter for Python"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*"
+python-versions = ">=3.6"
 
 [[package]]
 name = "qrcode"
@@ -2154,7 +2115,7 @@ hiredis = ["hiredis (>=0.1.3)"]
 
 [[package]]
 name = "regex"
-version = "2021.8.28"
+version = "2021.10.23"
 description = "Alternative regular expression module, to replace re."
 category = "dev"
 optional = false
@@ -2281,11 +2242,11 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
 
 [[package]]
 name = "smmap"
-version = "4.0.0"
+version = "5.0.0"
 description = "A pure Python implementation of a sliding window memory map manager"
 category = "dev"
 optional = false
-python-versions = ">=3.5"
+python-versions = ">=3.6"
 
 [[package]]
 name = "snowballstemmer"
@@ -2454,7 +2415,7 @@ python-versions = ">=3.5"
 
 [[package]]
 name = "stevedore"
-version = "3.4.0"
+version = "3.5.0"
 description = "Manage dynamic plugins for Python applications"
 category = "dev"
 optional = false
@@ -2473,7 +2434,7 @@ python-versions = "*"
 
 [[package]]
 name = "testfixtures"
-version = "6.18.2"
+version = "6.18.3"
 description = "A collection of helpers and mock objects for unit tests and doc tests."
 category = "dev"
 optional = false
@@ -2510,14 +2471,6 @@ pg8000 = ">=1.10"
 [package.extras]
 testing = ["sqlalchemy", "nose", "psycopg2"]
 
-[[package]]
-name = "text-unidecode"
-version = "1.3"
-description = "The most basic Text::Unidecode port"
-category = "main"
-optional = false
-python-versions = "*"
-
 [[package]]
 name = "toml"
 version = "0.10.2"
@@ -2526,25 +2479,9 @@ category = "main"
 optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
 
-[[package]]
-name = "tqdm"
-version = "4.62.3"
-description = "Fast, Extensible Progress Meter"
-category = "main"
-optional = false
-python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
-
-[package.dependencies]
-colorama = {version = "*", markers = "platform_system == \"Windows\""}
-
-[package.extras]
-dev = ["py-make (>=0.1.0)", "twine", "wheel"]
-notebook = ["ipywidgets (>=6)"]
-telegram = ["requests"]
-
 [[package]]
 name = "traitlets"
-version = "5.1.0"
+version = "5.1.1"
 description = "Traitlets Python configuration system"
 category = "main"
 optional = false
@@ -2555,7 +2492,7 @@ test = ["pytest"]
 
 [[package]]
 name = "twilio"
-version = "7.0.0"
+version = "7.2.0"
 description = "Twilio API client and TwiML generator"
 category = "main"
 optional = false
@@ -2576,7 +2513,7 @@ python-versions = "*"
 
 [[package]]
 name = "types-pytz"
-version = "2021.1.2"
+version = "2021.3.0"
 description = "Typing stubs for pytz"
 category = "dev"
 optional = false
@@ -2584,7 +2521,7 @@ python-versions = "*"
 
 [[package]]
 name = "types-pyyaml"
-version = "5.4.10"
+version = "6.0.0"
 description = "Typing stubs for PyYAML"
 category = "dev"
 optional = false
@@ -2645,11 +2582,11 @@ python-versions = "*"
 
 [[package]]
 name = "wrapt"
-version = "1.12.1"
+version = "1.13.3"
 description = "Module for decorators, wrappers and monkey patching."
 category = "main"
 optional = false
-python-versions = "*"
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
 
 [[package]]
 name = "yubiotp"
@@ -2665,7 +2602,7 @@ pycryptodome = "*"
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.9"
-content-hash = "7eb40dc6a015ee903496239f422a0bf7658f41fd43691e4582e241c274d14d6e"
+content-hash = "09f5e02d6386246bf8a7aa23ddba12dced09fbb3be195fb6768f819974d46de2"
 
 [metadata.files]
 alabaster = [
@@ -2677,8 +2614,8 @@ aleksis-builddeps = [
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+    {file = "AlekSIS-Core-2.0+20211029195856.5f016bc6.tar.gz", hash = "sha256:922cee561ccaf24640e0e61b0c6c5d77506f56f953afdf1815dce4eb9665509b"},
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-    {file = "django_bulk_update-2.2.0-py2.py3-none-any.whl", hash = "sha256:49a403392ae05ea872494d74fb3dfa3515f8df5c07cc277c3dc94724c0ee6985"},
-]
 django-cachalot = [
     {file = "django-cachalot-2.4.3.tar.gz", hash = "sha256:2c81390f53d8c2e0ae6f266cff170b5681dad2416e09266ca7ca25f50e892a53"},
     {file = "django_cachalot-2.4.3-py3-none-any.whl", hash = "sha256:d56ffa280da8317019959801703659616adcf60e1bf6513bd7e154b0b0851014"},
@@ -2985,8 +2909,8 @@ django-cleanup = [
     {file = "django_cleanup-5.2.0-py2.py3-none-any.whl", hash = "sha256:193cf69de54b9fc0a0f4547edbb3a63bbe01728cb029f9f4b7912098cc1bced7"},
 ]
 django-colorfield = [
-    {file = "django-colorfield-0.4.3.tar.gz", hash = "sha256:218932da7275ded152d0119131efde72e33b52abf88be4c14f8ffea799a112c4"},
-    {file = "django_colorfield-0.4.3-py3-none-any.whl", hash = "sha256:7f1b5ef2417928b7f25708ff31db2d119d255d27cbea496dae62bbde35325aec"},
+    {file = "django-colorfield-0.4.5.tar.gz", hash = "sha256:66d7cb628d05c0eb09e25b0923e36bf6fbd3e339c568a199e66b34463119ca13"},
+    {file = "django_colorfield-0.4.5-py3-none-any.whl", hash = "sha256:579128d008b2d15e4df64f102b1ad58432de1b6f1017221c316d630e5c62960a"},
 ]
 django-dbbackup = [
     {file = "django-dbbackup-3.3.0.tar.gz", hash = "sha256:bb109735cae98b64ad084e5b461b7aca2d7b39992f10c9ed9435e3ebb6fb76c8"},
@@ -2996,8 +2920,8 @@ django-debug-toolbar = [
     {file = "django_debug_toolbar-3.2.2-py3-none-any.whl", hash = "sha256:d7bab7573fab35b0fd029163371b7182f5826c13da69734beb675c761d06a4d3"},
 ]
 django-dynamic-preferences = [
-    {file = "django-dynamic-preferences-1.10.1.tar.gz", hash = "sha256:e4b2bb7b2563c5064ba56dd76441c77e06b850ff1466a386a1cd308909a6c7de"},
-    {file = "django_dynamic_preferences-1.10.1-py2.py3-none-any.whl", hash = "sha256:9419fa925fd2cbb665269ae72059eb3058bf080913d853419b827e4e7a141902"},
+    {file = "django-dynamic-preferences-1.11.0.tar.gz", hash = "sha256:f214c938b5872a17647e2b2ccfd9ad00a90a3c6c4aa83fa65d3c5c446e7a66c7"},
+    {file = "django_dynamic_preferences-1.11.0-py2.py3-none-any.whl", hash = "sha256:31aecebcbfcfb970b78cfa3e5f8cc9f77638efe8e7c90f205a48b01c45ee5002"},
 ]
 django-extensions = [
     {file = "django-extensions-3.1.3.tar.gz", hash = "sha256:5f0fea7bf131ca303090352577a9e7f8bfbf5489bd9d9c8aea9401db28db34a0"},
@@ -3019,10 +2943,6 @@ django-guardian = [
     {file = "django-guardian-2.4.0.tar.gz", hash = "sha256:c58a68ae76922d33e6bdc0e69af1892097838de56e93e78a8361090bcd9f89a0"},
     {file = "django_guardian-2.4.0-py3-none-any.whl", hash = "sha256:440ca61358427e575323648b25f8384739e54c38b3d655c81d75e0cd0d61b697"},
 ]
-django-hattori = [
-    {file = "django-hattori-0.2.1.tar.gz", hash = "sha256:6953d40881317252f19f62c4e7fe8058924b852c7498bc42beb7bc4d268c252c"},
-    {file = "django_hattori-0.2.1-py2.py3-none-any.whl", hash = "sha256:e529ed7af8fc34a0169c797c477672b687a205a56f3f5206f90c260acb83b7ac"},
-]
 django-haystack = [
     {file = "django-haystack-3.0.tar.gz", hash = "sha256:d490f920afa85471dd1fa5000bc8eff4b704daacbe09aee1a64e75cbc426f3be"},
 ]
@@ -3061,8 +2981,8 @@ django-menu-generator-ng = [
     {file = "django-menu-generator-ng-1.2.3.tar.gz", hash = "sha256:0c21a094b094add909655728b6b2d4a8baa5a2047da8f649be52589bea0e3ba2"},
 ]
 django-model-utils = [
-    {file = "django-model-utils-4.1.1.tar.gz", hash = "sha256:eb5dd05ef7d7ce6bc79cae54ea7c4a221f6f81e2aad7722933aee66489e7264b"},
-    {file = "django_model_utils-4.1.1-py3-none-any.whl", hash = "sha256:ef7c440024e797796a3811432abdd2be8b5225ae64ef346f8bfc6de7d8e5d73c"},
+    {file = "django-model-utils-4.2.0.tar.gz", hash = "sha256:e7a95e102f9c9653427eadab980d5d59e1dea972913b9c9e01ac37f86bba0ddf"},
+    {file = "django_model_utils-4.2.0-py3-none-any.whl", hash = "sha256:a768a25c80514e0ad4e4a6f9c02c44498985f36c5dfdea47b5b1e8cf994beba6"},
 ]
 django-oauth-toolkit = [
     {file = "django-oauth-toolkit-1.5.0.tar.gz", hash = "sha256:650e5ef2244d1d8db8f507137e0d1e8b8aad1f4086a4a610526e8851f9a38308"},
@@ -3101,12 +3021,11 @@ django-reversion = [
     {file = "django_reversion-4.0.0-py3-none-any.whl", hash = "sha256:f059c654e38c0dd8dccd7f0990aa2f6d9ad22dab55c5e095f9596aeda8079dcd"},
 ]
 django-sass-processor = [
-    {file = "django-sass-processor-1.0.1.tar.gz", hash = "sha256:dcaad47c591a2d52689c1bd209259e922e902d886293f0d5c9e0d1a4eb85eda2"},
-    {file = "django_sass_processor-1.0.1-py3-none-any.whl", hash = "sha256:1f043180c47754018e803a77da003377f5ea6558de57cd6946eb27a32e9c16a2"},
+    {file = "django-sass-processor-1.0.0.tar.gz", hash = "sha256:cb90efee38cd7b0fe727c78d8993ad7804de33f40328200dfc1a481307ef0466"},
 ]
 django-select2 = [
-    {file = "django-select2-7.7.2.tar.gz", hash = "sha256:eb0bf31adcba9c31f26c2402cdce5b03f1cca0e218dd7da93e718b3c20127375"},
-    {file = "django_select2-7.7.2-py2.py3-none-any.whl", hash = "sha256:7be7c9e03e51ae8b1876826881b5d4009bb38c2da96b34f264fb90e5aceb54aa"},
+    {file = "django-select2-7.7.3.tar.gz", hash = "sha256:063d29df5598ec6549a4d49cc4beb85d585987a4e470224592034aff2d4f0a3f"},
+    {file = "django_select2-7.7.3-py2.py3-none-any.whl", hash = "sha256:7bf5b35595624a3318f46d69f639e38dafb123fa4a6f82d63a6a1ac6d532317d"},
 ]
 django-stubs = [
     {file = "django-stubs-1.9.0.tar.gz", hash = "sha256:664843091636a917faf5256d028476559dc360fdef9050b6df87ab61b21607bf"},
@@ -3117,8 +3036,8 @@ django-stubs-ext = [
     {file = "django_stubs_ext-0.3.1-py3-none-any.whl", hash = "sha256:a51a3e9e844d4e1cacaaedbb33bf3def78a3956eed5d9575a640bd97ccd99cec"},
 ]
 django-tables2 = [
-    {file = "django-tables2-2.4.0.tar.gz", hash = "sha256:4eb526464ee56a0b7d827d1da9a4f257e44edb5e1cbb6a0cfb6ca0fed70d8e4f"},
-    {file = "django_tables2-2.4.0-py2.py3-none-any.whl", hash = "sha256:0f10ecef25708385a9d32d68d7c9478ca8dda31569410cb05a025be3f2c57593"},
+    {file = "django-tables2-2.4.1.tar.gz", hash = "sha256:6c72dd208358539e789e4c0efd7d151e43283a4aa4093a35f44c43489e7ddeaa"},
+    {file = "django_tables2-2.4.1-py2.py3-none-any.whl", hash = "sha256:50762bf3d7c61a4eb70e763c3e278650d7266bb78d0497fc8fafcf4e507c9a64"},
 ]
 django-templated-email = [
     {file = "django-templated-email-3.0.0.tar.gz", hash = "sha256:49d61840ec551e640adaf341146e94d6f9058ae01df964480850bf988046e5eb"},
@@ -3141,8 +3060,8 @@ django-uwsgi-ng = [
     {file = "django_uwsgi_ng-1.1.2-py3-none-any.whl", hash = "sha256:8b1a489a1ed9e56da0efadfa86ec306b532e5cd953fe34b234aaefc26898c649"},
 ]
 django-widget-tweaks = [
-    {file = "django-widget-tweaks-1.4.8.tar.gz", hash = "sha256:9f91ca4217199b7671971d3c1f323a2bec71a0c27dec6260b3c006fa541bc489"},
-    {file = "django_widget_tweaks-1.4.8-py2.py3-none-any.whl", hash = "sha256:f80bff4a8a59b278bb277a405a76a8b9a884e4bae7a6c70e78a39c626cd1c836"},
+    {file = "django-widget-tweaks-1.4.9.tar.gz", hash = "sha256:19bcb66a4a9e68493ced04e7124882d753c5be517ed001556f9e35a40147f545"},
+    {file = "django_widget_tweaks-1.4.9-py2.py3-none-any.whl", hash = "sha256:d6c64fbf92cd2df9031f597c1374982233c05a1190d295c39d1c57ce007569c7"},
 ]
 django-yarnpkg = [
     {file = "django-yarnpkg-6.0.1.tar.gz", hash = "sha256:aa059347b246c6f242401581d2c129bdcb45aa726be59fe2f288762a9843348a"},
@@ -3163,10 +3082,6 @@ dynaconf = [
     {file = "dynaconf-3.1.7-py2.py3-none-any.whl", hash = "sha256:f52fe5db7622da56a552275e8f64e4df46e3b4ae11158831b042e8ba2f6d1c96"},
     {file = "dynaconf-3.1.7.tar.gz", hash = "sha256:e9d80b46ba4d9372f2f40c812594c963f74178140c0b596e57f2881001fc4d35"},
 ]
-faker = [
-    {file = "Faker-8.14.0-py3-none-any.whl", hash = "sha256:7b116034973a9a977a34a8a380354028150edf69f6cfbe55c03a852dd0a4116b"},
-    {file = "Faker-8.14.0.tar.gz", hash = "sha256:2649789e3e0c354dde1b8257d2ba7ed663fc3201e41277581de65c17e8aab10a"},
-]
 flake8 = [
     {file = "flake8-3.9.2-py2.py3-none-any.whl", hash = "sha256:bf8fd333346d844f616e8d47905ef3a3384edae6b4e9beb0c5101e25e3110907"},
     {file = "flake8-3.9.2.tar.gz", hash = "sha256:07528381786f2a6237b061f6e96610a4167b226cb926e2aa2b6b1d78057c576b"},
@@ -3195,8 +3110,8 @@ flake8-fixme = [
     {file = "flake8_fixme-1.1.1-py2.py3-none-any.whl", hash = "sha256:226a6f2ef916730899f29ac140bed5d4a17e5aba79f00a0e3ae1eff1997cb1ac"},
 ]
 flake8-isort = [
-    {file = "flake8-isort-4.0.0.tar.gz", hash = "sha256:2b91300f4f1926b396c2c90185844eb1a3d5ec39ea6138832d119da0a208f4d9"},
-    {file = "flake8_isort-4.0.0-py2.py3-none-any.whl", hash = "sha256:729cd6ef9ba3659512dee337687c05d79c78e1215fdf921ed67e5fe46cce2f3c"},
+    {file = "flake8-isort-4.1.1.tar.gz", hash = "sha256:d814304ab70e6e58859bc5c3e221e2e6e71c958e7005239202fee19c24f82717"},
+    {file = "flake8_isort-4.1.1-py3-none-any.whl", hash = "sha256:c4e8b6dcb7be9b71a02e6e5d4196cefcef0f3447be51e82730fb336fff164949"},
 ]
 flake8-mypy = [
     {file = "flake8-mypy-17.8.0.tar.gz", hash = "sha256:47120db63aff631ee1f84bac6fe8e64731dc66da3efc1c51f85e15ade4a3ba18"},
@@ -3215,8 +3130,8 @@ freezegun = [
     {file = "freezegun-1.1.0.tar.gz", hash = "sha256:177f9dd59861d871e27a484c3332f35a6e3f5d14626f2bf91be37891f18927f3"},
 ]
 gitdb = [
-    {file = "gitdb-4.0.7-py3-none-any.whl", hash = "sha256:6c4cc71933456991da20917998acbe6cf4fb41eeaab7d6d67fbc05ecd4c865b0"},
-    {file = "gitdb-4.0.7.tar.gz", hash = "sha256:96bf5c08b157a666fec41129e6d327235284cca4c81e92109260f353ba138005"},
+    {file = "gitdb-4.0.9-py3-none-any.whl", hash = "sha256:8033ad4e853066ba6ca92050b9df2f89301b8fc8bf7e9324d412a63f8bf1a8fd"},
+    {file = "gitdb-4.0.9.tar.gz", hash = "sha256:bac2fd45c0a1c9cf619e63a90d62bdc63892ef92387424b855792a6cabe789aa"},
 ]
 gitpython = [
     {file = "GitPython-3.1.24-py3-none-any.whl", hash = "sha256:dc0a7f2f697657acc8d7f89033e8b1ea94dd90356b2983bca89dc8d2ab3cc647"},
@@ -3231,8 +3146,8 @@ html2text = [
     {file = "html2text-2020.1.16.tar.gz", hash = "sha256:e296318e16b059ddb97f7a8a1d6a5c1d7af4544049a01e261731d2d5cc277bbb"},
 ]
 idna = [
-    {file = "idna-3.2-py3-none-any.whl", hash = "sha256:14475042e284991034cb48e06f6851428fb14c4dc953acd9be9a5e95c7b6dd7a"},
-    {file = "idna-3.2.tar.gz", hash = "sha256:467fbad99067910785144ce333826c71fb0e63a425657295239737f7ecd125f3"},
+    {file = "idna-3.3-py3-none-any.whl", hash = "sha256:84d9dd047ffa80596e0f246e2eab0b391788b0503584e8945f2368256d2735ff"},
+    {file = "idna-3.3.tar.gz", hash = "sha256:9d643ff0a55b762d5cdb124b8eaa99c66322e2157b69160bc32796e824360e6d"},
 ]
 imagesize = [
     {file = "imagesize-1.2.0-py2.py3-none-any.whl", hash = "sha256:6965f19a6a2039c7d48bca7dba2473069ff854c36ae6f19d2cde309d998228a1"},
@@ -3243,8 +3158,8 @@ iniconfig = [
     {file = "iniconfig-1.1.1.tar.gz", hash = "sha256:bc3af051d7d14b2ee5ef9969666def0cd1a000e121eaea580d4a313df4b37f32"},
 ]
 ipython = [
-    {file = "ipython-7.27.0-py3-none-any.whl", hash = "sha256:75b5e060a3417cf64f138e0bb78e58512742c57dc29db5a5058a2b1f0c10df02"},
-    {file = "ipython-7.27.0.tar.gz", hash = "sha256:58b55ebfdfa260dad10d509702dc2857cb25ad82609506b070cf2d7b7df5af13"},
+    {file = "ipython-7.29.0-py3-none-any.whl", hash = "sha256:a658beaf856ce46bc453366d5dc6b2ddc6c481efd3540cb28aa3943819caac9f"},
+    {file = "ipython-7.29.0.tar.gz", hash = "sha256:4f69d7423a5a1972f6347ff233e38bbf4df6a150ef20fbb00c635442ac3060aa"},
 ]
 isort = [
     {file = "isort-5.9.3-py3-none-any.whl", hash = "sha256:e17d6e2b81095c9db0a03a8025a957f334d6ea30b26f9ec70805411e5c7c81f2"},
@@ -3255,8 +3170,8 @@ jedi = [
     {file = "jedi-0.18.0.tar.gz", hash = "sha256:92550a404bad8afed881a137ec9a461fed49eca661414be45059329614ed0707"},
 ]
 jinja2 = [
-    {file = "Jinja2-3.0.1-py3-none-any.whl", hash = "sha256:1f06f2da51e7b56b8f238affdd6b4e2c61e39598a378cc49345bc1bd42a978a4"},
-    {file = "Jinja2-3.0.1.tar.gz", hash = "sha256:703f484b47a6af502e743c9122595cc812b0271f661722403114f71a79d0f5a4"},
+    {file = "Jinja2-3.0.2-py3-none-any.whl", hash = "sha256:8569982d3f0889eed11dd620c706d39b60c36d6d25843961f33f77fb6bc6b20c"},
+    {file = "Jinja2-3.0.2.tar.gz", hash = "sha256:827a0e32839ab1600d4eb1c4c33ec5a8edfbc5cb42dafa13b81f182f97784b45"},
 ]
 jwcrypto = [
     {file = "jwcrypto-1.0-py2.py3-none-any.whl", hash = "sha256:db93a656d9a7a35dda5a68deb5c9f301f4e60507d8aef1559e0637b9ac497137"},
@@ -3379,8 +3294,8 @@ oauthlib = [
     {file = "oauthlib-3.1.1.tar.gz", hash = "sha256:8f0215fcc533dd8dd1bee6f4c412d4f0cd7297307d43ac61666389e3bc3198a3"},
 ]
 packaging = [
-    {file = "packaging-21.0-py3-none-any.whl", hash = "sha256:c86254f9220d55e31cc94d69bade760f0847da8000def4dfe1c6b872fd14ff14"},
-    {file = "packaging-21.0.tar.gz", hash = "sha256:7dc96269f53a4ccec5c0670940a4281106dd0bb343f47b7471f779df49c2fbe7"},
+    {file = "packaging-21.2-py3-none-any.whl", hash = "sha256:14317396d1e8cdb122989b916fa2c7e9ca8e2be9e8060a6eff75b6b7b4d8a7e0"},
+    {file = "packaging-21.2.tar.gz", hash = "sha256:096d689d78ca690e4cd8a89568ba06d07ca097e3306a4381635073ca91479966"},
 ]
 parso = [
     {file = "parso-0.8.2-py2.py3-none-any.whl", hash = "sha256:a8c4922db71e4fdb90e0d0bc6e50f9b273d3397925e5e60a717e719201778d22"},
@@ -3406,83 +3321,71 @@ pexpect = [
     {file = "pexpect-4.8.0.tar.gz", hash = "sha256:fc65a43959d153d0114afe13997d439c22823a27cefceb5ff35c2178c6784c0c"},
 ]
 pg8000 = [
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-    {file = "pg8000-1.21.2.tar.gz", hash = "sha256:36a3b517408334967c1fa0d29656da03608d63122a372ec92c85f49aed2d24e3"},
+    {file = "pg8000-1.22.0-py3-none-any.whl", hash = "sha256:a0e82542f4a56b2139c41ff09c1aeff294c10b6500bb6c57890c0c1c551cbc03"},
+    {file = "pg8000-1.22.0.tar.gz", hash = "sha256:c5172252fc92142ec104cd5e7231be4580a1a0a814403707bafbf7bb8383a29a"},
 ]
 phonenumbers = [
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-    {file = "phonenumbers-8.12.33.tar.gz", hash = "sha256:de3d5a3cb421c7421f584bb13cb9287e23ee2dd97d832fc35c9b55b96a576a3c"},
+    {file = "phonenumbers-8.12.36-py2.py3-none-any.whl", hash = "sha256:fa91fff1cefee6873c78f08c767f341a7658c849ffb74b605cb38cefef0e76fa"},
+    {file = "phonenumbers-8.12.36.tar.gz", hash = "sha256:e29717fcf86d68082fc6e42ca07e52bff863b6e0b354edd1644ba15c35ef213d"},
 ]
 pickleshare = [
     {file = "pickleshare-0.7.5-py2.py3-none-any.whl", hash = "sha256:9649af414d74d4df115d5d718f82acb59c9d418196b7b4290ed47a12ce62df56"},
     {file = "pickleshare-0.7.5.tar.gz", hash = "sha256:87683d47965c1da65cdacaf31c8441d12b8044cdec9aca500cd78fc2c683afca"},
 ]
 pillow = [
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 yubiotp = [
     {file = "YubiOTP-1.0.0.post1-py2.py3-none-any.whl", hash = "sha256:7ad57011866e0bc6c6d179ffbc3926fcc0e82d410178a6d01ba4da0f88332878"},
diff --git a/pyproject.toml b/pyproject.toml
index 56b926d28947131b9b8017226473278795ca6fb0..3498cf44f6859fc44fb2c689bf48308b3ec4e4c0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "AlekSIS-App-Chronos"
-version = "2.0rc3"
+version = "2.0"
 packages = [
     { include = "aleksis" }
 ]
@@ -27,7 +27,7 @@ repository = "https://edugit.org/AlekSIS/official/AlekSIS-App-Chronos"
 documentation = "https://aleksis.org/AlekSIS/docs/html/"
 keywords = ["SIS", "education", "school", "timetable", "plans"]
 classifiers = [
-    "Development Status :: 4 - Beta",
+    "Development Status :: 5 - Production/Stable",
     "Environment :: Web Environment",
     "Framework :: Django :: 3.0",
     "Intended Audience :: Education",
@@ -43,7 +43,7 @@ secondary = true
 [tool.poetry.dependencies]
 python = "^3.9"
 calendarweek = "^0.5.0"
-aleksis-core = "^2.0rc"
+aleksis-core = "^2.0"
 
 [tool.poetry.dev-dependencies]
 aleksis-builddeps = "*"