diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0f0c6d4..bc53cc0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,26 +9,26 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
-    - uses: actions/checkout@master
+    - uses: actions/checkout@v2
 
     - name: Build the site in the jekyll/builder container
       run: |
         docker run --rm \
         --volume="${{ github.workspace }}:/srv/jekyll" \
-        jekyll/builder:latest /bin/bash -c "gem install bundler && sudo bundle install && chmod -R 777 /srv/jekyll && jekyll build && bundle exec just-the-docs rake search:init"
+        jekyll/builder:latest /bin/bash -c "gem install bundler && bundle install && chmod -R 777 /srv/jekyll && jekyll build && bundle exec just-the-docs rake search:init"
 
   jekyll-3-8-5:
     name: Build Jekyll site (v3.8.5)
     runs-on: ubuntu-latest
     steps:
 
-    - uses: actions/checkout@master
+    - uses: actions/checkout@v2
 
     - name: Build the site in the jekyll/builder container
       run: |
         docker run --rm \
         --volume="${{ github.workspace }}:/srv/jekyll" \
-        jekyll/builder:3.8.5 /bin/bash -c "gem install bundler && sudo bundle install && 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 && bundle install && chmod -R 777 /srv/jekyll && jekyll build && bundle exec just-the-docs rake search:init"
 
   assets:
     name: Format and test CSS and JS