diff --git a/CHANGES.rst b/CHANGES.rst
index e5108ee..7ddf399 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,3 +1,6 @@
+1.3.1 (unreleased)
+==================
+
 1.3.0 (2023-11-28)
 ==================