diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 232f188..71d3b60 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -23,7 +23,7 @@ jobs:
 
     steps:
       - name: checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - uses: ruby/setup-ruby@ab177d40ee5483edb974554986f56b33477e21d0 # pin@v1.265.0
         with:
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index f3beb27..1b9c010 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - uses: ruby/setup-ruby@ab177d40ee5483edb974554986f56b33477e21d0 # pin@v1.265.0
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 68ea3f0..2ad0da9 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - uses: ruby/setup-ruby@ab177d40ee5483edb974554986f56b33477e21d0 # pin@v1.265.0
         with:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2d321cf..5be4832 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -18,7 +18,7 @@ jobs:
         ruby_version: ["3.1", "3.2", "3.3", "3.4"]
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Update .ruby-version with matrix value
         run: echo "${{ matrix.ruby_version }}" >| .ruby-version