diff --git a/.github/workflows/ci-master.yml b/.github/workflows/ci-master.yml
index 3fcce48..0be2958 100644
--- a/.github/workflows/ci-master.yml
+++ b/.github/workflows/ci-master.yml
@@ -18,9 +18,9 @@ jobs:
       run: |
         docker run --rm \
         --volume="${{ github.workspace }}:/srv/jekyll" \
-        jekyll/builder:latest /bin/bash -c "gem install bundler && chmod -R 777 /srv/jekyll && jekyll build && bundle exec just-the-docs rake search:init"
+        jekyll/builder:latest /bin/bash -c "gem install bundler && git config --global --add safe.directory /srv/jekyll && chmod -R 777 /srv/jekyll && jekyll build && bundle exec just-the-docs rake search:init"
   jekyll-3-8-5:
-    name: Build Jekyll site (v4.0.0)
+    name: Build Jekyll site (v3.8.5)
     runs-on: ubuntu-latest
     steps:
 
@@ -30,7 +30,7 @@ jobs:
       run: |
         docker run --rm \
         --volume="${{ github.workspace }}:/srv/jekyll" \
-        jekyll/builder:4.0.0 /bin/bash -c "gem install bundler && chmod -R 777 /srv/jekyll && jekyll build && bundle exec just-the-docs rake search:init"
+        jekyll/builder:3.8.5 /bin/bash -c "gem install bundler && chmod -R 777 /srv/jekyll && jekyll build && bundle exec just-the-docs rake search:init"
   assets:
     name: Format and test CSS and JS
     runs-on: ubuntu-latest