diff --git a/.github/workflows/gradle-build.yml b/.github/workflows/gradle-build.yml
index b288c6f..c4cea46 100644
--- a/.github/workflows/gradle-build.yml
+++ b/.github/workflows/gradle-build.yml
@@ -16,7 +16,7 @@ jobs:
     steps:
       # Checkout the Code
       - name: Checkout Code
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       # Set up git hashes environment variables
       - name: Git Hashes
         uses: Im-Fran/git-hashes-action@v1.0.3
diff --git a/.github/workflows/gradle-test.yml b/.github/workflows/gradle-test.yml
index f9e1e13..0858fbb 100644
--- a/.github/workflows/gradle-test.yml
+++ b/.github/workflows/gradle-test.yml
@@ -16,7 +16,7 @@ jobs:
     steps:
     # Checkout code
     - name: Checkout Code
-      uses: actions/checkout@v3
+      uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
     # Setup java and maven
     - name: Set up JDK ${{ matrix.java-version }}
       uses: actions/setup-java@v3
diff --git a/.github/workflows/gradle-wrapper-validation.yml b/.github/workflows/gradle-wrapper-validation.yml
index 91e75b3..461c25c 100644
--- a/.github/workflows/gradle-wrapper-validation.yml
+++ b/.github/workflows/gradle-wrapper-validation.yml
@@ -6,5 +6,5 @@ jobs:
     name: "Validation"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - uses: gradle/wrapper-validation-action@v1
\ No newline at end of file