benchmark.gemspec in benchmark-0.3.0 vs benchmark.gemspec in benchmark-0.4.0

@@ -14,9 +14,11 @@
   spec.summary       = %q{a performance benchmarking library}
   spec.description   = spec.summary
   spec.homepage      = "https://github.com/ruby/benchmark"
   spec.licenses       = ["Ruby", "BSD-2-Clause"]
 
+  spec.required_ruby_version = ">= 2.1.0"
+
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = spec.homepage
 
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.