diff --git a/Gemfile.lock b/Gemfile.lock
index 19f7fba..b41872b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -161,9 +161,9 @@ GEM
       sass (~> 3.2.0)
       sprockets (~> 2.8, <= 2.11.0)
       sprockets-rails (~> 2.0)
-    simplecov (0.9.0)
+    simplecov (0.9.1)
       docile (~> 1.1.0)
-      multi_json
+      multi_json (~> 1.0)
       simplecov-html (~> 0.8.0)
     simplecov-html (0.8.0)
     slop (3.6.0)