diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8f419d9..3d0919e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,9 +8,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
       - name: Prepare
-        uses: subosito/flutter-action@v2
+        uses: subosito/flutter-action@44ac965b96f18d999802d4b807e3256d5a3f9fa1 # v2
         with:
           channel: 'stable'
       - name: Dependencies
diff --git a/.github/workflows/publish.yaml b/.github/workflows/publish.yaml
index b9831ae..a9bcacd 100644
--- a/.github/workflows/publish.yaml
+++ b/.github/workflows/publish.yaml
@@ -13,8 +13,8 @@ jobs:
       contents: read
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: dart-lang/setup-dart@v1
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
+      - uses: dart-lang/setup-dart@e630b99d28a3b71860378cafdc2a067c71107f94 # v1
       - name: Install Flutter SDK
         uses: britannio/action-install-flutter@v1
       - run: dart --version