diff --git a/.github/workflows/clang-format-check.yaml b/.github/workflows/clang-format-check.yaml
index 3953545..c5a5c40 100644
--- a/.github/workflows/clang-format-check.yaml
+++ b/.github/workflows/clang-format-check.yaml
@@ -5,6 +5,6 @@ jobs:
     name: Formatting Check
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Run clang-format style check for C/C++/Protobuf programs.
       uses: jidicula/clang-format-action@v4.11.0
diff --git a/.github/workflows/copyright-header-check.yaml b/.github/workflows/copyright-header-check.yaml
index e0efeb3..5b7762d 100644
--- a/.github/workflows/copyright-header-check.yaml
+++ b/.github/workflows/copyright-header-check.yaml
@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Install license-header-checker
         run: curl -s https://raw.githubusercontent.com/lluissm/license-header-checker/master/install.sh | bash
       - name: Run license check