diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 619e7c3..4b4d89f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,16 +24,14 @@ jobs:
             ruby: 2.6
           - gemfile: rails_6.0
             ruby: 2.7
-          - gemfile: rails_6.0
-            ruby: 2.6
           - gemfile: rails_5.2
-            ruby: 2.6
+            ruby: 2.7
           - gemfile: rails_5.1
-            ruby: 2.6
+            ruby: 2.7
           - gemfile: rails_5.0
-            ruby: 2.6
+            ruby: 2.7
           - gemfile: rails_4.2
-            ruby: 2.6
+            ruby: 2.7
 
     env:
       BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/${{ matrix.gemfile }}.gemfile
diff --git a/webhook_system.gemspec b/webhook_system.gemspec
index cfd847d..5df33da 100644
--- a/webhook_system.gemspec
+++ b/webhook_system.gemspec
@@ -36,7 +36,7 @@ Gem::Specification.new do |gem|
     ```
   }
 
-  gem.required_ruby_version = '> 2.6.2'
+  gem.required_ruby_version = '> 2.7.0'
   gem.add_runtime_dependency 'activesupport', '> 4.2', '< 7.2'
   gem.add_runtime_dependency 'activerecord', '> 4.2', '< 7.2'
   gem.add_runtime_dependency 'activejob', '> 4.2', '< 7.2'