unicode-emoji.gemspec in unicode-emoji-2.6.0 vs unicode-emoji.gemspec in unicode-emoji-2.7.0

@@ -15,9 +15,9 @@
   gem.files         = Dir["{**/}{.*,*}"].select{ |path| File.file?(path) && path !~ /^pkg/ }
   gem.executables   = gem.files.grep(%r{^bin/}).map{ |f| File.basename(f) }
   gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
   gem.require_paths = ["lib"]
 
-  gem.required_ruby_version = "~> 2.3"
+  gem.required_ruby_version = ">= 2.3", "< 4.0"
 
   gem.add_dependency "unicode-version", "~> 1.0"
 end