diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bdb0f3de..22551991 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -31,7 +31,7 @@ jobs:
         - { os: ubuntu-latest , ruby: debug }
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
diff --git a/.github/workflows/nmatrix.yml b/.github/workflows/nmatrix.yml
index 8cd0e560..36a4b1fc 100644
--- a/.github/workflows/nmatrix.yml
+++ b/.github/workflows/nmatrix.yml
@@ -25,7 +25,7 @@ jobs:
         - 2.6
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
diff --git a/.github/workflows/pycall.yml b/.github/workflows/pycall.yml
index 37d95ab0..86d87920 100644
--- a/.github/workflows/pycall.yml
+++ b/.github/workflows/pycall.yml
@@ -33,7 +33,7 @@ jobs:
         - { os: ubuntu-latest , ruby: debug , python: 3.x , python_architecture: x64 }
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: Setup Ruby
       uses: ruby/setup-ruby@v1