diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 3e0e10c6..54133bd7 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -3,6 +3,12 @@ Changelog
 
 This document describes changes between each past release.
 
+5.1.2 (unreleased)
+==================
+
+- Nothing changed yet.
+
+
 5.1.1 (2021-10-26)
 ==================
 
diff --git a/setup.cfg b/setup.cfg
index 652faf9e..159cdd6c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = ihatemoney
-version = 5.1.1
+version = 5.1.2.dev0
 url = https://github.com/spiral-project/ihatemoney
 description = A simple shared budget manager web application.
 long_description = file: README.rst, CHANGELOG.rst