oslg.gemspec in oslg-0.2.10 vs oslg.gemspec in oslg-0.3.0

@@ -22,10 +22,10 @@
   s.platform              = Gem::Platform::RUBY
   s.homepage              = "https://github.com/rd2/oslg"
   s.bindir                = "exe"
   s.require_paths         = ["lib"]
   s.executables           = s.files.grep(%r{^exe/}) { |f| File.basename(f) }
-  s.required_ruby_version = [">= 2.5.0", "< 3"]
+  s.required_ruby_version = [">= 2.5.0", "< 4"]
   s.metadata              = {}
 
   s.add_development_dependency "bundler", "~> 2.1"
   s.add_development_dependency "rake",    "~> 13.0"
   s.add_development_dependency "rspec",   "~> 3.11"