diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index a474deec5d69854e52698c6d888d5b83a18f9800..fddc249c7837454dbb002323dc5cedd28b539a5a 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -6,6 +6,9 @@ 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`_.
 
+Unreleased
+----------
+
 `2.9`_ - 2022-05-25
 -------------------
 
diff --git a/docs/conf.py b/docs/conf.py
index e528cd660b3c6a443f93a01880153264c6b4dcee..b31ca6be5a35d2e169c9c13c52de1180b108b608 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -31,7 +31,7 @@ author = "The AlekSIS Team"
 # The short X.Y version
 version = "2.9"
 # The full version, including alpha/beta/rc tags
-release = "2.9"
+release = "2.9.1.dev0"
 
 
 # -- General configuration ---------------------------------------------------
diff --git a/pyproject.toml b/pyproject.toml
index 18c05ccac281870ef5eee983b6bd0e58d7b73d9b..b492b58bcf6d32c8bccbfd0360737605fcddad49 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "AlekSIS-Core"
-version = "2.9"
+version = "2.9.1.dev0"
 packages = [
     { include = "aleksis" }
 ]