diff --git a/calendarweek/__init__.py b/calendarweek/__init__.py
index 82be3f5d433a30dcea53343318ee59da970ecf66..a2901825ab61e2206d0a664c56e77236d99bb30f 100644
--- a/calendarweek/__init__.py
+++ b/calendarweek/__init__.py
@@ -1 +1,3 @@
 from .calendarweek import CalendarWeek
+
+__version__ = "0.5.0"
diff --git a/pyproject.toml b/pyproject.toml
index 1c33623c26926e94f4c2ffa935aebfecfba1640c..6cd672c300ad8440076b08f3c587927a771d7913 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "calendarweek"
-version = "0.4.7"
+version = "0.5.0"
 description = "Utilities for working with calendar weeks in Python and Django"
 authors = ["Dominik George <nik@naturalnet.de>", "Jonathan Weth <git@jonathanweth.de>"]
 license = "Apache-2.0"