diff --git a/Gemfile.lock b/Gemfile.lock
index c3c7aee..0d1d213 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -20,11 +20,11 @@ GEM
     guard-rspec (2.3.3)
       guard (>= 1.1)
       rspec (~> 2.11)
-    hike (1.2.1)
+    hike (1.2.3)
     listen (0.6.0)
     lumberjack (1.0.2)
     method_source (0.8.1)
-    multi_json (1.5.0)
+    multi_json (1.15.0)
     polyglot (0.3.3)
     pry (0.9.10)
       coderay (~> 1.0.5)
@@ -50,7 +50,7 @@ GEM
       simplecov-html (~> 0.7.1)
     simplecov-html (0.7.1)
     slop (3.3.3)
-    sprockets (2.8.2)
+    sprockets (2.12.5)
       hike (~> 1.2)
       multi_json (~> 1.0)
       rack (~> 1.0)
@@ -60,7 +60,7 @@ GEM
       eventmachine (>= 0.12.6)
       rack (>= 1.0.0)
     thor (0.16.0)
-    tilt (1.3.3)
+    tilt (1.4.1)
     treetop (1.4.12)
       polyglot
       polyglot (>= 0.3.1)