From 0e21c9f57e4bcca4daab93d0645ee642e1f97675 Mon Sep 17 00:00:00 2001
From: Hiroshi SHIBATA <hsbt@ruby-lang.org>
Date: Thu, 12 Jan 2023 14:32:19 +0900
Subject: [PATCH] [ruby/mutex_m] Drop to support Ruby 2.4

https://github.com/ruby/mutex_m/commit/9245b9a63a
---
 lib/mutex_m.gemspec | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/mutex_m.gemspec b/lib/mutex_m.gemspec
index f614dcd9a0..ebbda2606c 100644
--- a/lib/mutex_m.gemspec
+++ b/lib/mutex_m.gemspec
@@ -20,6 +20,7 @@ Gem::Specification.new do |spec|
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
+  spec.required_ruby_version = '>= 2.5'
 
   spec.add_development_dependency "bundler"
   spec.add_development_dependency "rake"