diff --git a/.github/workflows/notify-sdks.yml b/.github/workflows/notify-sdks.yml
new file mode 100644
index 000000000..2450bd696
--- /dev/null
+++ b/.github/workflows/notify-sdks.yml
@@ -0,0 +1,54 @@
+# Copyright 2026 UCP Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: SDK Release Notification
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: "Version to notify (e.g. v2026-03-07)"
+        required: true
+        default: "v2026-03-07"
+  push:
+    tags:
+      - "v[0-9]{4}-[0-9]{2}-[0-9]{2}"
+
+jobs:
+  notify-sdks:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Generate Token
+        uses: actions/create-github-app-token@v1
+        id: app-token
+        with:
+          app-id: ${{ secrets.APP_ID }}
+          private-key: ${{ secrets.APP_PRIVATE_KEY }}
+          owner: ${{ github.repository_owner }}
+
+      - name: Notify Python SDK
+        uses: peter-evans/repository-dispatch@v3
+        with:
+          token: ${{ steps.app-token.outputs.token }}
+          repository: Universal-Commerce-Protocol/python-sdk
+          event-type: spec-release
+          client-payload: "{\"version\": \"${{ github.event.inputs.version || github.ref_name }}\"}"
+
+      - name: Notify JavaScript SDK
+        uses: peter-evans/repository-dispatch@v3
+        with:
+          token: ${{ steps.app-token.outputs.token }}
+          repository: Universal-Commerce-Protocol/js-sdk
+          event-type: spec-release
+          client-payload: "{\"version\": \"${{ github.event.inputs.version || github.ref_name }}\"}"