diff --git a/.github/workflows/website.yml b/.github/workflows/website.yml
index 179c214..146280c 100644
--- a/.github/workflows/website.yml
+++ b/.github/workflows/website.yml
@@ -29,6 +29,7 @@ jobs:
 
       - name: Install GitHub Pages, Bundler, and kramdown gems
         run: |
+          gem install nokogiri -v 1.15.5
           gem install github-pages bundler kramdown kramdown-parser-gfm
 
       - name: Install Python modules