kana-estimator.gemspec in kana-estimator-0.1.0 vs kana-estimator.gemspec in kana-estimator-0.1.1

@@ -19,9 +19,11 @@
   end
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
+  spec.required_ruby_version = '>= 2.6'
+
   spec.add_development_dependency "bundler"
   spec.add_development_dependency "rake"
   spec.add_development_dependency "rspec"
   spec.add_development_dependency "simplecov"
 end