diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index ae84efc49845b..641ae8b7d913c 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -1,3 +1,7 @@
+*   PostgreSQL `Cidr#change?` detects the address prefix change.
+
+    *Taketo Takashima*
+
 *   Added support for recursive common table expressions.
 
     ```ruby