diff --git a/.github/workflows/notify-mm-blog.yml b/.github/workflows/notify-mm-blog.yml
index c8c029f..d779121 100644
--- a/.github/workflows/notify-mm-blog.yml
+++ b/.github/workflows/notify-mm-blog.yml
@@ -18,11 +18,11 @@ jobs:
         run: |
           .github/workflows/notify-mm-blog.sh
       - name: Notify channel 1
-        uses: mattermost/action-mattermost-notify@master
-        env:
+        uses: mattermost/action-mattermost-notify@b7d118e440bf2749cd18a4a8c88e7092e696257a #v2.0.0
+        with:
           MATTERMOST_WEBHOOK_URL: ${{ secrets.MATTERMOST_WEBHOOK_URL_1 }}
       - name: Notify channel 2
-        uses: mattermost/action-mattermost-notify@master
-        env:
+        uses: mattermost/action-mattermost-notify@b7d118e440bf2749cd18a4a8c88e7092e696257a #v2.0.0
+        with:
           MATTERMOST_WEBHOOK_URL: ${{ secrets.MATTERMOST_WEBHOOK_URL_2 }}