diff --git a/.github/workflows/cross-compile.yml b/.github/workflows/cross-compile.yml
index 2533996..23e0c79 100644
--- a/.github/workflows/cross-compile.yml
+++ b/.github/workflows/cross-compile.yml
@@ -38,7 +38,7 @@ jobs:
         id: cross-gem
         with:
           platform: ${{ matrix.platform }}
-          ruby-versions: 2.6,2.7,${{ join(fromJSON(needs.ci-data.outputs.result).stable-ruby-versions) }}
+          ruby-versions: 2.7,${{ join(fromJSON(needs.ci-data.outputs.result).stable-ruby-versions) }}
 
       - uses: actions/upload-artifact@v4
         with:
diff --git a/colordom.gemspec b/colordom.gemspec
index ae89bc0..527efd9 100644
--- a/colordom.gemspec
+++ b/colordom.gemspec
@@ -17,7 +17,7 @@ Gem::Specification.new do |spec|
   spec.extensions    = Dir['ext/**/extconf.rb']
   spec.require_paths = ['lib']
 
-  spec.required_ruby_version = '>= 2.6'
+  spec.required_ruby_version = '>= 2.7'
 
   spec.add_runtime_dependency 'rb_sys'