diff --git a/hawk/Gemfile b/hawk/Gemfile
index b56848661..680eb87d8 100644
--- a/hawk/Gemfile
+++ b/hawk/Gemfile
@@ -15,7 +15,9 @@
 #
 
 gem "rails", "~> 4.2.0"
-gem "puma", ">= 2.11"
+gem "puma", ">= 2.16"
+gem "rake", ">= 10.1.0"
+gem "json", ">= 1.8.1"
 gem "sass-rails", "~> 5.0.1"
 gem "virtus", "~> 1.0.4"
 gem "js-routes", "~> 1.0"