diff --git a/.python-version b/.python-version
new file mode 100644
index 0000000..7de0ce6
--- /dev/null
+++ b/.python-version
@@ -0,0 +1 @@
+3.9.0-amd64
diff --git a/.vscode/settings.json b/.vscode/settings.json
index d9ecfcd..de971ea 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,4 +1,5 @@
 {
+    "restructuredtext.confPath": "",
     "files.exclude": {
         "**/.git": true,
         "**/.svn": true,
diff --git a/pyproject.toml b/pyproject.toml
index e5d2d8b..f276ad1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,18 +6,18 @@ authors = ["Johannes Schriewer <hallo@dunkelstern.de>"]
 
 [tool.poetry.dependencies]
 python = "^3.8"
-django = "^3.0.4"
+django = "^3.1"
 gunicorn = "^20.0.4"
 whitenoise = "^5.0.1"
 commentjson = "^0.8.3"
-psycopg2 = "^2.8.4"
+psycopg2 = "^2.8"
 django-nested-admin = "^3.3.2"
-pillow = "^7.2.0"
+pillow = "^8.0"
 
 [tool.poetry.dev-dependencies]
 mypy = "^0.770"
-flake8 = "^3.7.9"
-pylint = "^2.4.4"
+flake8 = "^3.7"
+pylint = "^2.4"
 
 [build-system]
 requires = ["poetry>=0.12"]