diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index c59880c..826f99e 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -30,7 +30,7 @@ jobs:
       BUNDLE_GEMFILE: spec/gemfiles/${{ matrix.gemfile }}.gemfile
     name: Ruby ${{ matrix.ruby }} unit testing on ${{ matrix.os }} (${{ matrix.gemfile }})
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby }}