diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2ff3de500c32..17095da08fc0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## 0.251.1
+
 ## 0.251.0
 
 <details><summary>google/cloud-advisorynotifications 1.0.0</summary>