much-stub.gemspec in much-stub-0.1.2 vs much-stub.gemspec in much-stub-0.1.3

@@ -16,8 +16,10 @@
   gem.files         = `git ls-files`.split($/)
   gem.executables   = gem.files.grep(%r{^bin/}).map{ |f| File.basename(f) }
   gem.test_files    = gem.files.grep(%r{^(test|spec|features)/})
   gem.require_paths = ["lib"]
 
-  gem.add_development_dependency("assert", ["~> 2.18.0"])
+  gem.required_ruby_version = "~> 2.5"
+
+  gem.add_development_dependency("assert", ["~> 2.18.1"])
 
 end