diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f4213be5c..7e6cbf30d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -69,7 +69,7 @@ jobs:
                   java-version: 17
 
             - name: Install pnpm
-              uses: pnpm/action-setup@v4
+              uses: pnpm/action-setup@b906affcce14559ad1aafd4ab0e942779e9f58b1  # v4
               with:
                   run_install: false
 
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 2fab43538..c4edff770 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -74,7 +74,7 @@ jobs:
           fi
 
       - name: Log in to GHCR
-        uses: docker/login-action@v3
+        uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9  # v3
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
@@ -84,15 +84,15 @@ jobs:
 
       - name: Extract metadata (tags, labels)
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@c299e40c65443455700f0fdfc63efafe5b349051  # v5
         with:
           images: ghcr.io/${{ github.repository }}
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f  # v3
 
       - name: Build and push
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@10e90e3645eae34f1e60eeb005ba3a3d33f178e8  # v6
         with:
           context: .
           file: ./Dockerfile