diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2e6dafe..76b1c9c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -66,7 +66,7 @@ jobs:
         #- { os: macos-latest   , ruby: debug , python: "3.x" , python_architecture: x64 , venv: "" }
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 1
 
@@ -117,7 +117,7 @@ jobs:
         - "3.10"
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 1
 
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index f7e9d84..c3b2f86 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -38,7 +38,7 @@ jobs:
         #- { ruby: mswin , python: 3.x , python_architecture: x64 }
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 1
 
@@ -82,7 +82,7 @@ jobs:
         shell: pwsh
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 1