diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index 262389b..d0f2c92 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -9,7 +9,7 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Setup mdBook
         uses: peaceiris/actions-mdbook@v2
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d81d2b6..bb096bc 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,7 +11,7 @@ jobs:
     name: Test code samples
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Install toolchain
         uses: actions-rs/toolchain@v1
         with: