diff --git a/listen.gemspec b/listen.gemspec
index ed1ec0ce..ba62b76c 100644
--- a/listen.gemspec
+++ b/listen.gemspec
@@ -32,7 +32,7 @@ Gem::Specification.new do |gem| # rubocop:disable Metrics/BlockLength
   gem.executable   = 'listen'
   gem.require_path = 'lib'
 
-  gem.required_ruby_version = '>= 2.2.7' # rubocop:disable Gemspec/RequiredRubyVersion
+  gem.required_ruby_version = '>= 2.4.0' # rubocop:disable Gemspec/RequiredRubyVersion
 
   gem.add_dependency 'rb-fsevent', '~> 0.10', '>= 0.10.3'
   gem.add_dependency 'rb-inotify', '~> 0.9', '>= 0.9.10'