diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1a1b669..f7ca7a4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,7 +20,7 @@ jobs:
         with:
           encryption_key: ${{ secrets.GRADLE_ENCRYPTION_KEY }}
       - name: Gradle Wrapper Validation
-        uses: gradle/actions/wrapper-validation@v3
+        uses: gradle/actions/wrapper-validation@dbbdc275be76ac10734476cc723d82dfe7ec6eda # v3
   Build:
     runs-on: ubuntu-latest
     needs: [ Validate-Gradle ]
diff --git a/.github/workflows/update-gradle-wrapper.yml b/.github/workflows/update-gradle-wrapper.yml
index 113b515..421252b 100644
--- a/.github/workflows/update-gradle-wrapper.yml
+++ b/.github/workflows/update-gradle-wrapper.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
 
       - name: Update Gradle Wrapper
-        uses: gradle-update/update-gradle-wrapper-action@v1
+        uses: gradle-update/update-gradle-wrapper-action@0407394b9d173dfc9cf5695f9f560fef6d61a5fe # v1