diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 6b368f954db6148452b4130ea389378722dd9f0c..6234ca018cc166b4b560a9a8a7dd4a0434ab486d 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
+----------
+
 `2.3.1`_ – 2021-12-17
 ---------------------
 
diff --git a/pyproject.toml b/pyproject.toml
index 2e55c52ada8e5c36af76ae48b0de27a5fb174e87..04375dc8d9cf6c24acdbe5ee3ac7b4544a17395c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "AlekSIS-Core"
-version = "2.3.1"
+version = "2.4.dev0"
 packages = [
     { include = "aleksis" }
 ]