diff --git a/Gemfile.lock b/Gemfile.lock
index 07b980d..60b5334 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -45,7 +45,7 @@ GEM
     eventmachine (0.12.10)
     execjs (1.3.0)
       multi_json (~> 1.0)
-    hike (1.2.1)
+    hike (1.2.3)
     i18n (0.6.0)
     journey (1.0.3)
     jquery-rails (2.0.2)
@@ -75,7 +75,7 @@ GEM
       coderay (~> 1.0.5)
       method_source (~> 0.7.1)
       slop (>= 2.4.4, < 3)
-    rack (1.4.1)
+    rack (1.4.7)
     rack-cache (1.2)
       rack (>= 0.4)
     rack-ssl (1.3.2)
@@ -107,7 +107,7 @@ GEM
       tilt (~> 1.3)
     serialport (1.0.4)
     slop (2.4.4)
-    sprockets (2.1.2)
+    sprockets (2.1.4)
       hike (~> 1.2)
       rack (~> 1.0)
       tilt (~> 1.1, != 1.3.0)
@@ -119,7 +119,7 @@ GEM
       eventmachine (>= 0.12.6)
       rack (>= 1.0.0)
     thor (0.14.6)
-    tilt (1.3.3)
+    tilt (1.4.1)
     treetop (1.4.10)
       polyglot
       polyglot (>= 0.3.1)