CHANGELOG.md in aws-sdk-dynamodbstreams-1.39.0 vs CHANGELOG.md in aws-sdk-dynamodbstreams-1.40.0

@@ -1,7 +1,12 @@
 Unreleased Changes
 ------------------
 
+1.40.0 (2022-10-25)
+------------------
+
+* Feature - Code Generated Changes, see `./build_tools` or `aws-sdk-core`'s CHANGELOG.md for details.
+
 1.39.0 (2022-06-17)
 ------------------
 
 * Feature - Doc only update for DynamoDB service