diff --git a/Gemfile.lock b/Gemfile.lock
index 6b0278b..7beb64c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -117,7 +117,7 @@ GEM
       thin (~> 1.5.0)
     mime-types (1.23)
     mini_portile (0.5.0)
-    multi_json (1.7.6)
+    multi_json (1.13.1)
     mysql2 (0.3.11)
     net-scp (1.1.1)
       net-ssh (>= 2.6.5)
@@ -137,7 +137,7 @@ GEM
       mime-types
     polyglot (0.3.3)
     populator (1.0.0)
-    rack (1.4.5)
+    rack (1.4.7)
     rack-cache (1.2)
       rack (>= 0.4)
     rack-protection (1.5.0)
@@ -188,7 +188,7 @@ GEM
     skinny (0.2.3)
       eventmachine (~> 1.0.0)
       thin (~> 1.5.0)
-    sprockets (2.2.2)
+    sprockets (2.2.3)
       hike (~> 1.2)
       multi_json (~> 1.0)
       rack (~> 1.0)