diff --git a/distribution/changelog.txt b/distribution/changelog.txt
index 2d68a81492..8242898ac3 100644
--- a/distribution/changelog.txt
+++ b/distribution/changelog.txt
@@ -1,3 +1,6 @@
+0.4.21 (in development)
+------------------------------------------------------------------------
+
 0.4.20 (2025-02-25)
 ------------------------------------------------------------------------
 - Feature: [#22905] Add diagonal downward-inclined brakes to hybrid coaster and single rail coaster.