diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4868592..2a7eee8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,7 +9,7 @@ jobs:
         os: ["ubuntu", "macos"]
         ruby: ["2.6", "2.7", "3.0", "3.1", "3.2", "3.3", "3.4", "head"]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}
diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
index f9e8808..da474bb 100644
--- a/.github/workflows/doc.yml
+++ b/.github/workflows/doc.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ruby