diff --git a/.github/workflows/continuous-integration-terraform.yml b/.github/workflows/continuous-integration-terraform.yml
index 3bc8a12..976fb96 100644
--- a/.github/workflows/continuous-integration-terraform.yml
+++ b/.github/workflows/continuous-integration-terraform.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Check for terraform version mismatch
         run: |
@@ -50,7 +50,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: ${{ github.event.pull_request.head.ref }}
 
diff --git a/.github/workflows/continuous-integration-tflint.yml b/.github/workflows/continuous-integration-tflint.yml
index f497226..69e7329 100644
--- a/.github/workflows/continuous-integration-tflint.yml
+++ b/.github/workflows/continuous-integration-tflint.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Clone repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Setup TFLint
         uses: terraform-linters/setup-tflint@v3
         with:
diff --git a/.github/workflows/continuous-integration-tfsec.yml b/.github/workflows/continuous-integration-tfsec.yml
index 5bae724..5de9507 100644
--- a/.github/workflows/continuous-integration-tfsec.yml
+++ b/.github/workflows/continuous-integration-tfsec.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Clone repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: tfsec
         uses: aquasecurity/tfsec-pr-commenter-action@v1.3.1
         with: