diff --git a/Gemfile.lock b/Gemfile.lock
index 06a7fd1..387fa76 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -42,9 +42,9 @@ GEM
       execjs
     coffee-script-source (1.5.0)
     colorize (0.5.8)
-    coveralls (0.5.8)
+    coveralls (0.6.0)
       colorize
-      json
+      multi_json (~> 1.3)
       rest-client
       simplecov (>= 0.7)
       thor