diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 50cb6010..2be142b3 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,8 @@
 Release notes
 =============
 
+### Version 5.1.1-dev
+
 ### Version 5.1.0
 
 - Upgrade Python version to 3.12 and Django to 5.0.x
diff --git a/dejacode/__init__.py b/dejacode/__init__.py
index 928928f6..b388da21 100644
--- a/dejacode/__init__.py
+++ b/dejacode/__init__.py
@@ -14,7 +14,7 @@
 
 import git
 
-VERSION = "5.1.0"
+VERSION = "5.1.1-dev"
 
 PROJECT_DIR = Path(__file__).resolve().parent
 ROOT_DIR = PROJECT_DIR.parent
diff --git a/setup.cfg b/setup.cfg
index 90e3891c..5d39a16a 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = dejacode
-version = 5.1.0
+version = 5.1.1-dev
 license = AGPL-3.0-only
 description = Automate open source license compliance and ensure supply chain integrity
 long_description = file:README.rst