diff --git a/Gemfile.lock b/Gemfile.lock
index c972fc7..38c0029 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -69,7 +69,7 @@ GEM
       thor (>= 0.14.6)
     guard-rspec (1.2.1)
       guard (>= 1.1)
-    hike (1.2.1)
+    hike (1.2.3)
     i18n (0.6.1)
     journey (1.0.4)
     jquery-rails (2.1.3)
@@ -89,7 +89,7 @@ GEM
       treetop (~> 1.4.8)
     method_source (0.8.1)
     mime-types (1.19)
-    multi_json (1.3.7)
+    multi_json (1.15.0)
     nokogiri (1.5.5)
     pg (0.12.2)
     polyglot (0.3.3)
@@ -97,7 +97,7 @@ GEM
       coderay (~> 1.0.5)
       method_source (~> 0.8)
       slop (~> 3.3.1)
-    rack (1.4.1)
+    rack (1.4.7)
     rack-cache (1.2)
       rack (>= 0.4)
     rack-ssl (1.3.2)
@@ -150,7 +150,7 @@ GEM
       multi_json (~> 1.0)
       rubyzip
     slop (3.3.3)
-    sprockets (2.2.1)
+    sprockets (2.2.3)
       hike (~> 1.2)
       multi_json (~> 1.0)
       rack (~> 1.0)
@@ -159,7 +159,7 @@ GEM
     therubyracer (0.10.2)
       libv8 (~> 3.3.10)
     thor (0.16.0)
-    tilt (1.3.3)
+    tilt (1.4.1)
     treetop (1.4.12)
       polyglot
       polyglot (>= 0.3.1)