diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 9c89505..ead37f4 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -25,6 +25,10 @@ jobs:
       run: |
         echo "BUNDLE_WITH=checks:docs" >> $GITHUB_ENV
       if: matrix.ruby == 3.3
+    - name: Set bundler environment variables
+      run: |
+        echo "BUNDLE_WITH=dokaz" >> $GITHUB_ENV
+      if: matrix.ruby == 3.2
 
     # Use 'bundler-cache: true' instead of actions/cache as advised:
     #   * https://github.com/actions/cache/blob/main/examples.md#ruby---bundler
@@ -46,11 +50,12 @@ jobs:
     - run: bundle exec rubocop
       if: matrix.ruby == 3.3
 
-    - run: |
-        bundle exec yard doctest
-        bundle exec dokaz
+    - run: bundle exec yard doctest
       if: matrix.ruby == 3.3
 
+    - run: bundle exec dokaz
+      if: matrix.ruby == 3.2 # Does not yet work on Ruby 3.3+
+
     - name: Run benchmarks on Ruby 2.7 or 3.3
       run: |
         BUNDLE_GEMFILE=benchmarks/Gemfile bundle install --jobs 4 --retry 3
diff --git a/Gemfile b/Gemfile
index f3ad440..6a2c948 100644
--- a/Gemfile
+++ b/Gemfile
@@ -24,13 +24,17 @@ end
 
 # Excluded from CI except on latest MRI Ruby, to reduce compatibility burden
 group :docs, optional: true do
-  gem "dokaz", "~> 0.0.5"
   gem "redcarpet", "~> 3.6"
   gem "webrick", "~> 1.8"
   gem "yard", "~> 0.9"
   gem "yard-doctest", "~> 0.1"
 end
 
+# Excluded from CI except on the latest Ruby version that supports dokaz
+group :dokaz, optional: true do
+  gem "dokaz", "~> 0.0.5"
+end
+
 # Optional, only used locally to release to rubygems.org
 group :release, optional: true do
   gem "rake"