fb_graph.gemspec in fb_graph-2.4.20 vs fb_graph.gemspec in fb_graph-2.5.0

@@ -13,9 +13,10 @@
   s.files = `git ls-files`.split("\n")
   s.test_files = `git ls-files -- {test,spec,features}/*`.split("\n")
   s.add_runtime_dependency "httpclient", ">= 2.2.0.2"
   s.add_runtime_dependency "rack-oauth2", ">= 0.14.4"
   s.add_runtime_dependency "tzinfo"
+  s.add_runtime_dependency "json"
   s.add_development_dependency "rake", ">= 0.8"
   if RUBY_VERSION >= '1.9'
     s.add_development_dependency "cover_me", ">= 1.2.0"
   else
     s.add_development_dependency "rcov", ">= 0.9"