diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8f419d9..a8fd4ce 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,7 +10,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Prepare
-        uses: subosito/flutter-action@v2
+        uses: subosito/flutter-action@f2c4f6686ca8e8d6e6d0f28410eeef506ed66aff # v2.18.0
         with:
           channel: 'stable'
       - name: Dependencies