CHANGELOG.md in aws-sdk-pipes-1.3.0 vs CHANGELOG.md in aws-sdk-pipes-1.4.0

@@ -1,7 +1,12 @@
 Unreleased Changes
 ------------------
 
+1.4.0 (2023-05-31)
+------------------
+
+* Feature - Code Generated Changes, see `./build_tools` or `aws-sdk-core`'s CHANGELOG.md for details.
+
 1.3.0 (2023-03-22)
 ------------------
 
 * Feature - This release improves validation on the ARNs in the API model