diff --git a/.github/workflows/checkPullRequest.yml b/.github/workflows/checkPullRequest.yml
index e27ee90..b4dcf55 100644
--- a/.github/workflows/checkPullRequest.yml
+++ b/.github/workflows/checkPullRequest.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
 
       - name: Semantic Release
         uses: ./
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index e9d2cfd..0619321 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
 
       - name: Semantic Release
         uses: cycjimmy/semantic-release-action@v2
diff --git a/.github/workflows/testRelease.yml b/.github/workflows/testRelease.yml
index a783d78..4532fca 100644
--- a/.github/workflows/testRelease.yml
+++ b/.github/workflows/testRelease.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
 
       - name: Semantic Release
         uses: ./
@@ -65,7 +65,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
 
       - name: Semantic Release
         uses: ./