diff --git a/.github/workflows/minitest_on_pr_merge.yml b/.github/workflows/minitest_on_pr_merge.yml
index e81c38a..ab6d861 100644
--- a/.github/workflows/minitest_on_pr_merge.yml
+++ b/.github/workflows/minitest_on_pr_merge.yml
@@ -13,7 +13,7 @@ jobs:
         ruby-version: ['3.0.5', '3.1.3']
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby-version }}
diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 6f7b857..060a01d 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -18,7 +18,7 @@ jobs:
         ruby-version: ['3.0.5', '3.1.3']
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby-version }}