diff --git a/Gemfile.lock b/Gemfile.lock
index a59aa17..6b48036 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -99,7 +99,7 @@ GEM
     simplecov (0.4.2)
       simplecov-html (~> 0.4.4)
     simplecov-html (0.4.5)
-    sprockets (2.0.0.beta.14)
+    sprockets (2.0.0.beta.15)
       hike (~> 1.2)
       rack (~> 1.0)
       tilt (!= 1.3.0, ~> 1.1)