diff --git a/Gemfile.lock b/Gemfile.lock
index ea051b3..0901c0b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -153,7 +153,7 @@ GEM
     method_source (0.8.1)
     mime-types (1.23)
     mini_portile (0.5.0)
-    multi_json (1.7.7)
+    multi_json (1.13.1)
     multipart-post (1.2.0)
     net-scp (1.1.1)
       net-ssh (>= 2.6.5)
@@ -180,7 +180,7 @@ GEM
       coderay (~> 1.0.5)
       method_source (~> 0.8)
       slop (~> 3.4)
-    rack (1.4.5)
+    rack (1.4.7)
     rack-cache (1.2)
       rack (>= 0.4)
     rack-protection (1.5.0)
@@ -262,7 +262,7 @@ GEM
       tilt (~> 1.3, >= 1.3.3)
     slop (3.4.5)
     spork (0.9.2)
-    sprockets (2.2.2)
+    sprockets (2.2.3)
       hike (~> 1.2)
       multi_json (~> 1.0)
       rack (~> 1.0)