diff --git a/oauth2.gemspec b/oauth2.gemspec
index e519071b..89fd2d81 100644
--- a/oauth2.gemspec
+++ b/oauth2.gemspec
@@ -2,7 +2,7 @@
 # frozen_string_literal: true
 
 gem_version =
-  if RUBY_VERSION >= "3.1" # rubocop:disable Gemspec/RubyVersionGlobalsUsage
+  if Gem.ruby_version >= Gem::Version.new("3.1")
     # Loading Version into an anonymous module allows version.rb to get code coverage from SimpleCov!
     # See: https://github.com/simplecov-ruby/simplecov/issues/557#issuecomment-2630782358
     # See: https://github.com/panorama-ed/memo_wise/pull/397