diff --git a/Gemfile b/Gemfile
index 747ba92..555406f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,7 @@
 source 'http://rubygems.org'
 
 gem 'sinatra', '>= 1.3.1'
+gem 'sinatra-contrib', :require => false
 
 DM_VERSION = "1.2.0"
 gem 'dm-core', DM_VERSION
diff --git a/Gemfile.lock b/Gemfile.lock
index ff674fc..755ecd9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -8,6 +8,7 @@ GEM
     activesupport (3.1.2)
       multi_json (~> 1.0)
     addressable (2.2.6)
+    backports (2.3.0)
     bcrypt-ruby (3.0.1)
     builder (3.0.0)
     capybara (1.1.2)
@@ -48,6 +49,7 @@ GEM
       uuidtools (~> 2.1.2)
     dm-validations (1.2.0)
       dm-core (~> 1.2.0)
+    eventmachine (0.12.10)
     fastercsv (1.5.4)
     ffi (1.0.11)
     growl (1.0.3)
@@ -92,6 +94,13 @@ GEM
       rack (~> 1.3, >= 1.3.4)
       rack-protection (~> 1.1, >= 1.1.2)
       tilt (~> 1.3, >= 1.3.3)
+    sinatra-contrib (1.3.1)
+      backports (>= 2.0)
+      eventmachine
+      rack-protection
+      rack-test
+      sinatra (~> 1.3.0)
+      tilt (~> 1.3)
     slim (1.0.4)
       temple (~> 0.3.4)
       tilt (~> 1.3.2)
@@ -127,6 +136,7 @@ DEPENDENCIES
   rb-fsevent (>= 0.4.3.1)
   rspec (>= 2.7.0)
   sinatra (>= 1.3.1)
+  sinatra-contrib
   slim
   spork (>= 0.9.0.rc9)
   yajl-ruby (>= 1.1.0)