diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index 70f31f3..2b83c65 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -28,7 +28,7 @@ jobs:
         with:
           fetch-depth: 0 # need full history to get page last modified times
       - name: Setup Ruby
-        uses: ruby/setup-ruby@2654679fe7f7c29875c669398a8ec0791b8a64a1 # v1.215.0
+        uses: ruby/setup-ruby@8388f20e6a9c43cd241131b678469a9f89579f37 # v1.216.0
         with:
           ruby-version: '3.1'
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically