diff --git a/Gemfile.lock b/Gemfile.lock
index 4b0c8bf..048a117 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -22,14 +22,22 @@ GEM
       tzinfo (~> 0.3.37)
     atomic (1.1.14)
     builder (3.1.4)
+    coveralls (0.8.23)
+      json (>= 1.8, < 3)
+      simplecov (~> 0.16.1)
+      term-ansicolor (~> 1.3)
+      thor (>= 0.19.4, < 2.0)
+      tins (~> 1.6)
     diff-lcs (1.2.4)
+    docile (1.3.2)
     erubis (2.7.0)
     execjs (2.0.2)
     hike (1.2.3)
     i18n (0.6.5)
+    json (2.2.0)
     minitest (4.7.5)
-    multi_json (1.8.2)
-    rack (1.5.2)
+    multi_json (1.14.1)
+    rack (1.5.5)
     rack-test (0.6.2)
       rack (>= 1.0)
     railties (4.0.0)
@@ -46,7 +54,12 @@ GEM
     rspec-expectations (2.14.3)
       diff-lcs (>= 1.1.3, < 2.0)
     rspec-mocks (2.14.4)
-    sprockets (2.10.0)
+    simplecov (0.16.1)
+      docile (~> 1.1)
+      json (>= 1.8, < 3)
+      simplecov-html (~> 0.10.0)
+    simplecov-html (0.10.2)
+    sprockets (2.12.5)
       hike (~> 1.2)
       multi_json (~> 1.0)
       rack (~> 1.0)
@@ -56,16 +69,20 @@ GEM
       activesupport (>= 3.0)
       sprockets (~> 2.8)
     stylus-source (0.38.0)
-    thor (0.18.1)
+    term-ansicolor (1.7.1)
+      tins (~> 1.0)
+    thor (0.20.3)
     thread_safe (0.1.3)
       atomic
     tilt (1.4.1)
+    tins (1.21.1)
     tzinfo (0.3.38)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
+  coveralls (>= 0.8.0)
   railties (~> 4.0.0)
   rspec (~> 2.14.0)
   sprockets-rails (~> 2.0.0)