diff --git a/pyproject.toml b/pyproject.toml
index 266180549799dbf885d630708cdee2743bf0614e..1050fe3c9669bc739bdc846987b9cce03be0466e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,9 @@ url = "https://edugit.org/api/v4/projects/257/packages/pypi/simple"
 secondary = true
 
 [tool.poetry.dependencies]
-python = ">2.0"
+python = "^3.6"
+pelican-sitemap = "^1.0.2"
+pelican-jinja2content = "^1.0.1"
 
 [tool.poetry.dev-dependencies]