diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 9f51703..3690a08 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -13,9 +13,10 @@ jobs:
     name: Ruby ${{ matrix.ruby }}
     strategy:
       matrix:
-        ruby:
-          - '3.1'
-          - '3.3'
+        gemfile: [ test, jekyll3 ]
+        ruby: [ '3.1', '3.3' ]
+    env:
+      BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/${{ matrix.gemfile }}.gemfile
 
     steps:
       - uses: actions/checkout@v4
diff --git a/gemfiles/jekyll3.gemfile b/gemfiles/jekyll3.gemfile
new file mode 100644
index 0000000..f6026a8
--- /dev/null
+++ b/gemfiles/jekyll3.gemfile
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+gem "jekyll", "~> 3.9"
+
+# Specify your gem's dependencies in jekyll_ai_related_posts.gemspec
+gemspec :path => '../'
+
+gem "rake", "~> 13.0"
+
+gem "rspec", "~> 3.0"
+
+gem "rubocop", "~> 1.21"
+gem "rubocop-rails-omakase", require: false
+
+gem "debug"
diff --git a/gemfiles/test.gemfile b/gemfiles/test.gemfile
new file mode 100644
index 0000000..18ef187
--- /dev/null
+++ b/gemfiles/test.gemfile
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+# Specify your gem's dependencies in jekyll_ai_related_posts.gemspec
+gemspec :path => '../'
+
+gem "rake", "~> 13.0"
+
+gem "rspec", "~> 3.0"
+
+gem "rubocop", "~> 1.21"
+gem "rubocop-rails-omakase", require: false
+
+gem "debug"