diff --git a/CHANGELOG b/CHANGELOG
index da7b6178..d2a38eec 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,9 @@
+Development Version
+-------------------
+
+Nothing yet.
+
+
 Release 0.5.0 (Apr 13, 2024)
 ----------------------------
 
diff --git a/sqlparse/__init__.py b/sqlparse/__init__.py
index 17b4b525..6d23a98a 100644
--- a/sqlparse/__init__.py
+++ b/sqlparse/__init__.py
@@ -16,7 +16,7 @@
 from sqlparse import formatter
 
 
-__version__ = '0.5.0'
+__version__ = '0.5.1.dev0'
 __all__ = ['engine', 'filters', 'formatter', 'sql', 'tokens', 'cli']