representable.gemspec in representable-2.1.8 vs representable.gemspec in representable-2.2.0

@@ -28,7 +28,9 @@
   s.add_development_dependency "test_xml", "0.1.6"
   s.add_development_dependency "minitest", ">= 5.4.1"
   s.add_development_dependency "mocha", ">= 0.13.0"
   s.add_development_dependency "mongoid"
   s.add_development_dependency "virtus"
-  s.add_development_dependency "json", '~> 1.7.7'
+  s.add_development_dependency "json", '>= 1.7.7'
+
+  s.add_development_dependency "ruby-prof"
 end