diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index 528f5ae..7f2fb45 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@360dc864d5da99d54fcb8e9148c14a84b90d3e88 # v1.165.1
+        uses: ruby/setup-ruby@5daca165445f0ae10478593083f72ca2625e241d # v1.169.0
         with:
           ruby-version: '3.1'
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically