diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 49db9d304..401b09f2a 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,12 @@
 CHANGELOG
 =========
 
+6.4.5 (unreleased)
+------------------
+
+- Nothing changed yet.
+
+
 6.4.4 (2023-11-20)
 ------------------
 
diff --git a/VERSION b/VERSION
index 49df80bfe..b96172a16 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-6.4.4
+6.4.5.dev0