diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index b6ca7743..03fc90ae 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -28,7 +28,7 @@ jobs:
     continue-on-error: ${{ matrix.ruby == '3.0' || matrix.ruby == 'head'}}
     name: Ruby ${{ matrix.ruby }} (${{ matrix.os }})
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}
diff --git a/.github/workflows/clang-format.yml b/.github/workflows/clang-format.yml
index dac86d2c..791b5901 100644
--- a/.github/workflows/clang-format.yml
+++ b/.github/workflows/clang-format.yml
@@ -24,7 +24,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: Run clang-format style check
       uses: jidicula/clang-format-action@v4.11.0
diff --git a/.github/workflows/rubocop.yml b/.github/workflows/rubocop.yml
index 671f7676..909d8c7d 100644
--- a/.github/workflows/rubocop.yml
+++ b/.github/workflows/rubocop.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1