diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a927d91..fcfc88a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,7 +20,7 @@ jobs:
 
     strategy:
       matrix:
-        ruby: ['2.7', '3.0', '3.1']
+        ruby: [2.7, 3]
 
     steps:
       - name: Checkout
diff --git a/.github/workflows/pages-deploy.yml.hook b/.github/workflows/pages-deploy.yml.hook
index fed62a9..356d42a 100644
--- a/.github/workflows/pages-deploy.yml.hook
+++ b/.github/workflows/pages-deploy.yml.hook
@@ -42,7 +42,7 @@ jobs:
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '3.1' # reads from a '.ruby-version' or '.tools-version' file if 'ruby-version' is omitted
+          ruby-version: 3   # reads from a '.ruby-version' or '.tools-version' file if 'ruby-version' is omitted
           bundler-cache: true
 
       - name: Build site
diff --git a/jekyll-theme-chirpy.gemspec b/jekyll-theme-chirpy.gemspec
index 9c2aa94..57d92e5 100644
--- a/jekyll-theme-chirpy.gemspec
+++ b/jekyll-theme-chirpy.gemspec
@@ -23,7 +23,7 @@ Gem::Specification.new do |spec|
     "plugin_type"       => "theme"
   }
 
-  spec.required_ruby_version = [">= 2.5", "< 3.2"]
+  spec.required_ruby_version = ">= 2.6"
 
   spec.add_runtime_dependency "jekyll", "~> 4.3"
   spec.add_runtime_dependency "jekyll-paginate", "~> 1.1"