diff --git a/.github/workflows/gradle.yml b/.github/workflows/gradle.yml
index a032af2..c757164 100644
--- a/.github/workflows/gradle.yml
+++ b/.github/workflows/gradle.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - name: Set up JDK 17
         uses: actions/setup-java@v2
         with:
diff --git a/.github/workflows/prerelease.yml b/.github/workflows/prerelease.yml
index aebdaef..420c130 100644
--- a/.github/workflows/prerelease.yml
+++ b/.github/workflows/prerelease.yml
@@ -12,7 +12,7 @@ jobs:
 
     steps:
       # ...
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - name: Set up JDK 17
         uses: actions/setup-java@v2
         with: