diff --git a/.github/workflows/update_api.yml b/.github/workflows/update_api.yml
new file mode 100644
index 00000000..dd0c6728
--- /dev/null
+++ b/.github/workflows/update_api.yml
@@ -0,0 +1,57 @@
+name: Update API 
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "30 3 * * *"
+jobs:
+  update-api:
+    if: ${{ github.repository == 'saimedhi/opensearch-py' }}
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+          fetch-depth: 0
+      - name: Config git to rebase
+        run: git config --global pull.rebase true
+      - name: Set up Python 3.7
+        uses: actions/setup-python@v4
+        with:
+          python-version: 3.7
+      - name: Install dependencies
+        run: |
+          python3.7 -m pip install nox
+      - name: Generate API
+        run: nox -s generate
+      - name: Update CHANGELOG
+        run: |
+          start_line=$(grep -n '## \[Unreleased\]' CHANGELOG.md | cut -d: -f1)
+          end_line=$(awk '/^## \[/ {print NR; exit}' CHANGELOG.md || wc -l < CHANGELOG.md)
+          sed -i "${start_line},${end_line}s/### Updated APIs/### Updated APIs\n- Updated opensearch-py to reflect the latest OpenSearch API spec./" CHANGELOG.md
+      - name: Get current date
+        id: date
+        run: echo "::set-output name=date::$(date +'%Y-%m-%d')"
+      - name: GitHub App token
+        id: github_app_token
+        uses: tibdex/github-app-token@v2.1.0
+        with:
+          app_id: ${{ secrets.CI_APP_ID }}
+          private_key: ${{ secrets.CI_APP_PRIVATE_KEY }}
+      - name: Create pull request
+        id: cpr
+        uses: peter-evans/create-pull-request@v5
+        with:
+          token: ${{ steps.github_app_token.outputs.token }}
+          commit-message: Updated opensearch-py to reflect the latest OpenSearch API spec (${{ steps.date.outputs.date }})
+          title: Updated opensearch-py to reflect the latest OpenSearch API spec
+          body: |
+            Updated [opensearch-py](https://github.com/saimedhi/opensearch-py) to reflect the latest [OpenSearch API spec](https://github.com/saimedhi/opensearch-api-specification/blob/main/OpenSearch.openapi.json)
+            Date: ${{ steps.date.outputs.date }}
+          branch: automated-api-update
+          base: main
+          signoff: true
+          labels: |
+              autocut
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f4ce00af..3e3cb3a3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -21,6 +21,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 ### Fixed
 - 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
 ### Security
 ### Dependencies
 - Bumps `pytest-asyncio` from <=0.21.1 to <=0.23.4
@@ -35,6 +36,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Fix `TypeError` on `parallel_bulk` ([#601](https://github.com/opensearch-project/opensearch-py/pull/601))
 - Fix Amazon OpenSearch Serverless integration with LangChain ([#603](https://github.com/opensearch-project/opensearch-py/pull/603))
 - Fix type of `Field.__setattr__` ([604](https://github.com/opensearch-project/opensearch-py/pull/604))
+### Updated APIs
 ### Security
 
 ## [2.4.1]
@@ -218,4 +220,4 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 [2.2.0]: https://github.com/opensearch-project/opensearch-py/compare/v2.1.1...v2.2.0
 [2.1.1]: https://github.com/opensearch-project/opensearch-py/compare/v2.1.0...v2.1.1
 [2.1.0]: https://github.com/opensearch-project/opensearch-py/compare/v2.0.1...v2.1.0
-[2.0.1]: https://github.com/opensearch-project/opensearch-py/compare/v2.0.0...v2.0.1
\ No newline at end of file
+[2.0.1]: https://github.com/opensearch-project/opensearch-py/compare/v2.0.0...v2.0.1
diff --git a/opensearchpy/_async/client/cluster.py b/opensearchpy/_async/client/cluster.py
index 70d93cf8..c47aef07 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 c5b9f2ca..6b8c2026 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 fc49f266..6af86a91 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 d7b76a90..66a365fd 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,
         )