diff --git a/CHANGES.rst b/CHANGES.rst
index 1e190c7a..cce6b77d 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,6 +2,12 @@
 Change log for sw.allotmentclub
 ===============================
 
+5.11.1 (unreleased)
+===================
+
+- Nothing changed yet.
+
+
 5.11.0 (2023-07-30)
 ===================
 
diff --git a/src/sw/allotmentclub/version.py b/src/sw/allotmentclub/version.py
index 96f55f75..6f85967a 100644
--- a/src/sw/allotmentclub/version.py
+++ b/src/sw/allotmentclub/version.py
@@ -1 +1 @@
-__version__ = '5.11.0'
+__version__ = '5.11.1.dev0'