Specify devise from git source

Gemfile

@@ -3,7 +3,7 @@ source 'http://rubygems.org'
 gem 'rails', '~> 3.1.0.rc6'
 
 gem 'arel'
-gem 'devise'
+gem 'devise', :git => 'git://github.com/plataformatec/devise.git'
 gem 'geokit'
 gem 'haml', '~> 3.2.0.alpha'
 gem 'rails_admin', :git => 'git://github.com/sferik/rails_admin.git'

Gemfile.lock

@@ -1,3 +1,12 @@
+GIT
+  remote: git://github.com/plataformatec/devise.git
+  revision: 7b1418be3b33ac77cb185c15e641292767112f08
+  specs:
+    devise (1.4.2)
+      bcrypt-ruby (~> 3.0)
+      orm_adapter (~> 0.0.3)
+      warden (~> 1.0.3)
+
 GIT
   remote: git://github.com/sferik/rails_admin.git
   revision: e71eafaafd201227988034585303154011146713
@@ -47,8 +56,6 @@ GEM
     builder (3.0.0)
     crack (0.1.8)
     daemons (1.1.4)
-    devise (1.0.11)
-      warden (~> 0.10.3)
     erubis (2.7.0)
     eventmachine (0.12.10)
     eventmachine (0.12.10-java)
@@ -68,6 +75,7 @@ GEM
       treetop (~> 1.4.8)
     mime-types (1.16)
     multi_json (1.0.3)
+    orm_adapter (0.0.5)
     pg (0.11.0)
     polyglot (0.3.2)
     rack (1.3.2)
@@ -120,8 +128,8 @@ GEM
     uglifier (1.0.2)
       execjs (>= 0.3.0)
       multi_json (>= 1.0.2)
-    warden (0.10.7)
+    warden (1.0.5)
-      rack (>= 1.0.0)
+      rack (>= 1.0)
     webmock (1.7.5)
       addressable (> 2.2.5, ~> 2.2)
       crack (>= 0.1.7)
@@ -132,7 +140,7 @@ PLATFORMS
 
 DEPENDENCIES
   arel
-  devise
+  devise!
   fastercsv
   geokit
   haml (~> 3.2.0.alpha)