diff --git a/Gemfile b/Gemfile
index 10fca11f..4dca11ea 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,4 @@
 source :rubygems
 gem "term-ansicolor", :require => "term/ansicolor"
+gem "json_pure", ">= 1.4.3"
 gemspec