diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index 4dc31bf..b3e1770 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -25,7 +25,7 @@ jobs:
         with:
           fetch-depth: 0 # need full history to get page last modified times
       - name: Setup Ruby
-        uses: ruby/setup-ruby@52b8784594ec115fd17094752708121dc5dabb47 # v1.154.0
+        uses: ruby/setup-ruby@54a18e26dbbb1eabc604f317ade9a5788dddef81 # v1.159.0
         with:
           ruby-version: '3.1'
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically