diff --git a/.github/workflows/kumomta.yml b/.github/workflows/kumomta.yml
index d92df2cd..b0739970 100644
--- a/.github/workflows/kumomta.yml
+++ b/.github/workflows/kumomta.yml
@@ -175,7 +175,7 @@ jobs:
         uses: docker/setup-buildx-action@v4
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v6
+        uses: docker/metadata-action@v6.1.0
         with:
           images: name=ghcr.io/kumocorp/kumomta
           flavor: |
diff --git a/.github/workflows/redis.yml b/.github/workflows/redis.yml
index 52013b2d..45f0025d 100644
--- a/.github/workflows/redis.yml
+++ b/.github/workflows/redis.yml
@@ -30,7 +30,7 @@ jobs:
       - name: Docker meta
         if: ${{ github.event_name != 'pull_request' }}
         id: meta
-        uses: docker/metadata-action@v6
+        uses: docker/metadata-action@v6.1.0
         with:
           images: ghcr.io/kumocorp/redis
           tags: |
@@ -101,7 +101,7 @@ jobs:
         uses: docker/setup-buildx-action@v4
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v6
+        uses: docker/metadata-action@v6.1.0
         with:
           images: ghcr.io/kumocorp/redis
           tags: |
diff --git a/.github/workflows/reusable-kumomta-build.yml b/.github/workflows/reusable-kumomta-build.yml
index 580ad1ca..0327be6e 100644
--- a/.github/workflows/reusable-kumomta-build.yml
+++ b/.github/workflows/reusable-kumomta-build.yml
@@ -192,7 +192,7 @@ jobs:
         uses: docker/setup-buildx-action@v4
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v6
+        uses: docker/metadata-action@v6.1.0
         with:
           images: name=ghcr.io/kumocorp/kumomta
           flavor: |