diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index dac3932..3cd5f25 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@7d3497fd78c07c0d84ebafa58d8dac60cd1f0763 # v1.199.0
+        uses: ruby/setup-ruby@217c988b8c2bf2bacb2d5c78a7e7b18f8c34daed # v1.200.0
         with:
           ruby-version: '3.1'
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically