diff --git a/Gemfile b/Gemfile
index c6e9357..21bc1ca 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,5 @@
 source 'http://rubygems.org'
 
-gem 'activesupport', '>= 3.0.0'
-gem 'activemodel', '>= 3.0.0'
 gem 'cramp', :path => File.dirname(__FILE__)
 
 gem 'activesupport', '3.0.4'
@@ -14,6 +12,7 @@ end
 
 group :example do
   gem 'http_router'
+  gem 'usher'
   gem 'tramp', '~> 0.1'
   gem 'thin', '~> 1.2.7'
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index f93db9e..378d3c0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -20,6 +20,9 @@ GEM
     daemons (1.1.0)
     eventmachine (0.12.10)
     fuzzyhash (0.0.11)
+    http_router (0.5.3)
+      rack (>= 1.0.0)
+      url_mount (~> 0.2.1)
     i18n (0.5.0)
     mysqlplus (0.1.2)
     rack (1.2.1)
@@ -32,6 +35,8 @@ GEM
       activesupport (~> 3.0.0.beta4)
       arel (~> 0.4.0)
       mysqlplus (~> 0.1.1)
+    url_mount (0.2.1)
+      rack
     usher (0.8.3)
       fuzzyhash (>= 0.0.11)
 
@@ -42,6 +47,7 @@ DEPENDENCIES
   activesupport (= 3.0.4)
   cramp!
   eventmachine (~> 0.12.10)
+  http_router
   rack (~> 1.2.1)
   thin (~> 1.2.7)
   tramp (~> 0.1)