diff --git a/CHANGELOG.md b/CHANGELOG.md
index a84a4409c..8bb9a23aa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,6 +24,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Fix KeyError when scroll return no hits ([#616](https://github.com/opensearch-project/opensearch-py/pull/616))
 - Fix reuse of `OpenSearch` using `Urllib3HttpConnection` and `AsyncOpenSearch` after calling `close` ([#639](https://github.com/opensearch-project/opensearch-py/pull/639))
 ### Updated APIs
+- Updated opensearch-py APIs to reflect [opensearch-api-specification@1787056](https://github.com/opensearch-project/opensearch-api-specification/commit/178705681e5fd812ab59ad00cefa04146d03d7ad)
 ### Security
 ### Dependencies
 - Bumps `pytest-asyncio` from <=0.21.1 to <=0.23.4
diff --git a/opensearchpy/_async/client/cluster.py b/opensearchpy/_async/client/cluster.py
index 70d93cf8e..c47aef07a 100644
--- a/opensearchpy/_async/client/cluster.py
+++ b/opensearchpy/_async/client/cluster.py
@@ -530,10 +530,7 @@ async def delete_decommission_awareness(
 
         """
         return await self.transport.perform_request(
-            "DELETE",
-            "/_cluster/decommission/awareness/",
-            params=params,
-            headers=headers,
+            "DELETE", "/_cluster/decommission/awareness", params=params, headers=headers
         )
 
     @query_params()
diff --git a/opensearchpy/_async/client/security.py b/opensearchpy/_async/client/security.py
index c5b9f2ca1..6b8c20269 100644
--- a/opensearchpy/_async/client/security.py
+++ b/opensearchpy/_async/client/security.py
@@ -98,7 +98,7 @@ async def get_action_groups(
         """
         return await self.transport.perform_request(
             "GET",
-            "/_plugins/_security/api/actiongroups/",
+            "/_plugins/_security/api/actiongroups",
             params=params,
             headers=headers,
         )
diff --git a/opensearchpy/client/cluster.py b/opensearchpy/client/cluster.py
index fc49f2664..6af86a91e 100644
--- a/opensearchpy/client/cluster.py
+++ b/opensearchpy/client/cluster.py
@@ -530,10 +530,7 @@ def delete_decommission_awareness(
 
         """
         return self.transport.perform_request(
-            "DELETE",
-            "/_cluster/decommission/awareness/",
-            params=params,
-            headers=headers,
+            "DELETE", "/_cluster/decommission/awareness", params=params, headers=headers
         )
 
     @query_params()
diff --git a/opensearchpy/client/security.py b/opensearchpy/client/security.py
index d7b76a90f..66a365fda 100644
--- a/opensearchpy/client/security.py
+++ b/opensearchpy/client/security.py
@@ -98,7 +98,7 @@ def get_action_groups(
         """
         return self.transport.perform_request(
             "GET",
-            "/_plugins/_security/api/actiongroups/",
+            "/_plugins/_security/api/actiongroups",
             params=params,
             headers=headers,
         )