diff --git a/Gemfile.lock b/Gemfile.lock
index 28f5cd1..7ca8dd2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -33,7 +33,7 @@ GEM
     d3_rails (2.10.0)
       railties (>= 3.1.0)
     erubis (2.7.0)
-    hike (1.2.1)
+    hike (1.2.3)
     i18n (0.6.0)
     journey (1.0.3)
     jquery-rails (2.0.2)
@@ -56,7 +56,7 @@ GEM
     multi_json (1.3.4)
     mysql2 (0.3.11)
     polyglot (0.3.3)
-    rack (1.4.1)
+    rack (1.4.7)
     rack-cache (1.2)
       rack (>= 0.4)
     rack-ssl (1.3.2)
@@ -83,12 +83,12 @@ GEM
       json (~> 1.4)
     rest-client (1.6.7)
       mime-types (>= 1.16)
-    sprockets (2.1.3)
+    sprockets (2.1.4)
       hike (~> 1.2)
       rack (~> 1.0)
       tilt (~> 1.1, != 1.3.0)
     thor (0.14.6)
-    tilt (1.3.3)
+    tilt (1.4.1)
     treetop (1.4.10)
       polyglot
       polyglot (>= 0.3.1)