diff --git a/.github/workflows/deploy.yaml b/.github/workflows/deploy.yaml
index 40016c7..b40aff2 100644
--- a/.github/workflows/deploy.yaml
+++ b/.github/workflows/deploy.yaml
@@ -26,15 +26,15 @@ jobs:
       matrix:
         python-version: ['3.12', '3.13', '3.14']
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
         with:
           python-version: ${{ matrix.python-version }}
 
       - name: Set up uv
-        uses: astral-sh/setup-uv@v3
+        uses: astral-sh/setup-uv@8d55fbecc275b1c35dbe060458839f8d30439ccf # v3
         with:
           version: "latest"
 
@@ -66,12 +66,12 @@ jobs:
       tag: ${{ steps.semrel.outputs.new_release_git_tag }}
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
         with:
           fetch-depth: 0
 
       - name: Setup Node
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6
         with:
           node-version: 20
 
@@ -80,7 +80,7 @@ jobs:
 
       - name: Run semantic-release
         id: semrel
-        uses: cycjimmy/semantic-release-action@v4
+        uses: cycjimmy/semantic-release-action@16ca923e6ccbb50770c415a0ccd43709a8c5f7a4 # v4
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
@@ -110,23 +110,23 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
 
       - name: Login to Docker Hub
-        uses: docker/login-action@v3
+        uses: docker/login-action@5e57cd118135c172c3672efd75eb46360885c0ef # v3
         with:
           username: ${{ vars.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_PAT }}
 
       - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
+        uses: docker/setup-qemu-action@c7c53464625b32c7a7e944ae62b3e17d2b600130 # v3
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3
 
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v5
+        uses: docker/metadata-action@c299e40c65443455700f0fdfc63efafe5b349051 # v5
         with:
           images: graystorm/amcrest2mqtt
           tags: |
@@ -160,7 +160,7 @@ jobs:
 
       - name: Build and push
         id: build-and-push
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 # v6
         with:
           context: .
           pull: true
@@ -176,7 +176,7 @@ jobs:
           provenance: true
 
       - name: Install Cosign
-        uses: sigstore/cosign-installer@v3
+        uses: sigstore/cosign-installer@f713795cb21599bc4e5c4b58cbad1da852d7eeb9 # v3
 
       - name: Sign the image
         env:
@@ -185,7 +185,7 @@ jobs:
           cosign sign --yes graystorm/amcrest2mqtt@${DIGEST}
 
       - name: Run Trivy vulnerability scanner
-        uses: aquasecurity/trivy-action@master
+        uses: aquasecurity/trivy-action@22438a435773de8c97dc0958cc0b823c45b064ac # master
         with:
           image-ref: graystorm/amcrest2mqtt@${{ steps.build-and-push.outputs.digest }}
           format: 'sarif'
@@ -193,7 +193,7 @@ jobs:
           severity: 'CRITICAL,HIGH'
 
       - name: Upload Trivy scan results to GitHub Security tab
-        uses: github/codeql-action/upload-sarif@v4
+        uses: github/codeql-action/upload-sarif@27fcff4ecb39e96348e7ceddcc2d9ef42308b6fc # v4
         if: always()
         with:
           sarif_file: 'trivy-results.sarif'
diff --git a/.github/workflows/dockerhub-description.yaml b/.github/workflows/dockerhub-description.yaml
index 6e8183e..623fd3d 100644
--- a/.github/workflows/dockerhub-description.yaml
+++ b/.github/workflows/dockerhub-description.yaml
@@ -10,10 +10,10 @@ jobs:
   dockerHubDescription:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
     - name: Docker Hub Description
-      uses: peter-evans/dockerhub-description@v4
+      uses: peter-evans/dockerhub-description@432a30c9e07499fd01da9f8a49f0faf9e0ca5b77 # v4
       with:
         username: ${{ vars.DOCKERHUB_USERNAME }}
         password: ${{ secrets.DOCKERHUB_PAT }}