diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index e5a88a91..c6afdc96 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -7,6 +7,14 @@
 Changelog
 =========
 
+3.1.1 - UNRELEASED
+------------------
+
+**Other changes:**
+
+- Build and test with Python 3.13 in CI.
+
+
 3.1.0 - 2024-11-11
 ------------------