diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 4991f7bc..ac579053 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -70,7 +70,7 @@ jobs:
         uses: pnpm/action-setup@fe02b34f77f8bc703788d5817da081398fad5dd2 # v4.0.0
       - id: deploy
         name: Deploy
-        uses: cloudflare/wrangler-action@v3.9.0
+        uses: cloudflare/wrangler-action@9681c2997648301493e78cacbfb790a9f19c833f # v3.9.0
         with:
           wranglerVersion: ${{ env.WRANGLER_VERSION }}
           apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
diff --git a/test.Dockerfile b/test.Dockerfile
index 5aaf0a28..b1184abb 100644
--- a/test.Dockerfile
+++ b/test.Dockerfile
@@ -1 +1 @@
-FROM hello-world
+FROM hello-world@sha256:d211f485f2dd1dee407a80973c8f129f00d54604d2c90732e8e320e5038a0348