diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c21c19e..e12da4d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,17 +17,13 @@ jobs:
           bundle install
           bundle exec rubocop
   test:
-    strategy:
-      fail-fast: false
-      matrix:
-        ruby_version: ["2.7", "3.0"]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: ${{ matrix.ruby_version }}
+          ruby-version: '3.0'
           bundler-cache: true
       - name: Install dependencies
         run: bundle install
diff --git a/Gemfile.lock b/Gemfile.lock
index 6c8022a..801e82e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    erblint-github (0.5.1)
+    erblint-github (1.0.0)
 
 GEM
   remote: https://rubygems.org/
diff --git a/erblint-github.gemspec b/erblint-github.gemspec
index 924fbca..f1a4396 100644
--- a/erblint-github.gemspec
+++ b/erblint-github.gemspec
@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |s|
   s.name = "erblint-github"
-  s.version = "0.5.1"
+  s.version = "1.0.0"
   s.summary = "erblint GitHub"
   s.description = "Template style checking for GitHub Ruby repositories"
   s.homepage = "https://github.com/github/erblint-github"
@@ -11,7 +11,7 @@ Gem::Specification.new do |s|
   s.files = Dir["README.md", "LICENSE", "lib/**/*", "config/**/*"]
   s.require_paths = ["lib"]
 
-  s.required_ruby_version = ">= 2.7.0"
+  s.required_ruby_version = ">= 3.0.0"
 
   s.email = ["opensource+erblint-github@github.com"]
   s.authors = ["GitHub Open Source"]