diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f6a2854..33be543 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -49,7 +49,7 @@ jobs:
         uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3
 
       - name: Build proxy image (multi-platform, no push)
-        uses: docker/build-push-action@10e90e3645eae34f1e60eeb005ba3a3d33f178e8 # v6
+        uses: docker/build-push-action@53b7df96c91f9c12dcc8a07bcb9ccacbed38856a # v7.3.0
         with:
           context: .
           file: docker/proxy.Dockerfile
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 1a43b4b..6b42623 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -55,7 +55,7 @@ jobs:
           echo "SHORT_SHA=${SHORT_SHA}" >> "$GITHUB_ENV"
 
       - name: Build and push proxy image (multi-platform)
-        uses: docker/build-push-action@10e90e3645eae34f1e60eeb005ba3a3d33f178e8 # v6
+        uses: docker/build-push-action@53b7df96c91f9c12dcc8a07bcb9ccacbed38856a # v7.3.0
         with:
           context: .
           file: docker/proxy.Dockerfile