diff --git a/.github/workflows/code-samples.yml b/.github/workflows/code-samples.yml
index 2250d063e..4a1c022ac 100644
--- a/.github/workflows/code-samples.yml
+++ b/.github/workflows/code-samples.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Fetch Sources
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Gradle Wrapper Validation
         uses: gradle/wrapper-validation-action@v1.0.3
 
@@ -47,7 +47,7 @@ jobs:
       image: gradle:jdk8
     steps:
       - name: Fetch Sources
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Setup Cache
         uses: actions/cache@v2.1.5
         with:
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 839fff4b2..4be8c3703 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Fetch Sources
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
       - name: Get Plugin Verifier Version
         id: get-version
         run: |