Gemfile in timed_lru-0.3.1 vs Gemfile in timed_lru-0.3.2

@@ -1,2 +1,6 @@
 source "http://rubygems.org"
-gemspec
\ No newline at end of file
+gemspec
+
+gem 'coveralls', require: false, group: :test
+gem 'json', '>= 1.7.7', require: false, group: :test
+