diff --git a/.github/workflows/fabric-integration-tests.yaml b/.github/workflows/fabric-integration-tests.yaml
index c88491d7..4969b151 100644
--- a/.github/workflows/fabric-integration-tests.yaml
+++ b/.github/workflows/fabric-integration-tests.yaml
@@ -56,7 +56,7 @@ jobs:
 
       - name: Upload test reports
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
         with:
           name: fabric-test-reports
           path: reports/
@@ -79,7 +79,7 @@ jobs:
 
       - name: Notify Slack
         if: always()
-        uses: slackapi/slack-github-action@v2
+        uses: slackapi/slack-github-action@91efab103c0de0a537f72a35f6b8cda0ee76bf0a # v2
         with:
           method: chat.postMessage
           token: ${{ secrets.SLACK_ACCESS_TOKEN }}
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 94819cd6..5f68b5b0 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -67,6 +67,6 @@ jobs:
           python -m build --sdist --wheel --outdir ${{ env.DIST_DIR }} .
 
       - name: Publish to PyPI
-        uses: pypa/gh-action-pypi-publish@release/v1
+        uses: pypa/gh-action-pypi-publish@dc37677b2e1c63e2034f94d8a5b11f265b73ba33 # release/v1
         with:
           packages-dir: ${{ env.DIST_DIR }}