diff --git a/CHANGELOG.md b/CHANGELOG.md
index f138ea9389bfd..57c2f97405fd2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -43,7 +43,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Indexed IP field supports `terms_query` with more than 1025 IP masks [#16391](https://github.com/opensearch-project/OpenSearch/pull/16391)
 
 ### Deprecated
-- Performing update operation with default pipeline or final pipeline is deprecated
+- Performing update operation with default pipeline or final pipeline is deprecated ([#16712](https://github.com/opensearch-project/OpenSearch/pull/16712))
 
 ### Removed
 
diff --git a/rest-api-spec/src/main/resources/rest-api-spec/test/update/100_ingest_pipeline.yml b/rest-api-spec/src/main/resources/rest-api-spec/test/update/100_ingest_pipeline.yml
index 480b3ae990cad..0996fe3b4a08e 100644
--- a/rest-api-spec/src/main/resources/rest-api-spec/test/update/100_ingest_pipeline.yml
+++ b/rest-api-spec/src/main/resources/rest-api-spec/test/update/100_ingest_pipeline.yml
@@ -58,7 +58,7 @@ teardown:
 
   - do:
       allowed_warnings:
-        - "the index [test_1] has a default ingest pipeline or a final ingest pipeline, but performing update operation with ingest pipeline causes unexpected result, this support will be removed in 3.0.0"
+        - "the index [test_1] has a default ingest pipeline or a final ingest pipeline, the support of the ingest pipelines for update operation causes unexpected result and will be removed in 3.0.0"
       update:
         index:            test_1
         id:               1