diff --git a/README.md b/README.md
index db821a08..ebadaf98 100644
--- a/README.md
+++ b/README.md
@@ -259,7 +259,7 @@ be obeyed though. Features developed in `concurrent-ruby-edge` are expected to m
 
 ## Supported Ruby versions
 
-* MRI 2.2.10 and above
+* MRI 2.2 and above
 * Latest JRuby 9000
 * Latest TruffleRuby
 
diff --git a/concurrent-ruby-edge.gemspec b/concurrent-ruby-edge.gemspec
index 27f5af7e..3d2741f1 100644
--- a/concurrent-ruby-edge.gemspec
+++ b/concurrent-ruby-edge.gemspec
@@ -23,7 +23,7 @@ be obeyed though. Features developed in `concurrent-ruby-edge` are expected to m
 Please see http://concurrent-ruby.com for more information.
   TXT
 
-  s.required_ruby_version = '>= 2.2.10'
+  s.required_ruby_version = '>= 2.2'
 
   s.add_runtime_dependency 'concurrent-ruby', "~> #{Concurrent::VERSION}"
 end
diff --git a/concurrent-ruby-ext.gemspec b/concurrent-ruby-ext.gemspec
index 4a4d92b1..0560d2c5 100644
--- a/concurrent-ruby-ext.gemspec
+++ b/concurrent-ruby-ext.gemspec
@@ -21,7 +21,7 @@ Gem::Specification.new do |s|
   s.require_paths    = ['lib']
   s.extensions       = 'ext/concurrent-ruby-ext/extconf.rb'
 
-  s.required_ruby_version = '>= 2.2.10'
+  s.required_ruby_version = '>= 2.2'
 
   s.add_runtime_dependency 'concurrent-ruby', "= #{Concurrent::VERSION}"
 end
diff --git a/concurrent-ruby.gemspec b/concurrent-ruby.gemspec
index 63d908a6..d493b1b8 100644
--- a/concurrent-ruby.gemspec
+++ b/concurrent-ruby.gemspec
@@ -27,5 +27,5 @@ Gem::Specification.new do |s|
   TXT
   s.metadata["source_code_uri"] = "https://github.com/ruby-concurrency/concurrent-ruby"
   s.metadata["changelog_uri"] = "https://github.com/ruby-concurrency/concurrent-ruby/blob/master/CHANGELOG.md"
-  s.required_ruby_version = '>= 2.2.10'
+  s.required_ruby_version = '>= 2.2'
 end