diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index b4a843c..c89c251 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -138,7 +138,7 @@ jobs:
         with:
           fetch-depth: 0 # need full history to get page last modified times
       - name: Setup Ruby
-        uses: ruby/setup-ruby@2a7b30092b0caf9c046252510f9273b4875f3db9 # v1.254.0
+        uses: ruby/setup-ruby@0481980f17b760ef6bca5e8c55809102a0af1e5a # v1.263.0
         with:
           ruby-version: '3.1'
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically