diff --git a/Gemfile b/Gemfile
index ef7c547a..00faf268 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 source "http://gemcutter.org"
 
 # Need to install Rails from source
-gem "rails", "3.0.0.beta1", :git => "git://github.com/rails/rails.git"
+gem "rails", :git => "git://github.com/rails/rails.git"
 gem "warden", "0.9.7"
 gem "sqlite3-ruby", :require => "sqlite3"
 gem "webrat", "0.7"
@@ -13,7 +13,7 @@ if RUBY_VERSION < '1.9'
 end
 
 group :mongo_mapper do
-  gem "mongo",        "0.18.3"
-  gem "mongo_ext",    "0.18.3", :require => false
-  gem "mongo_mapper-rails3", :git => "git://github.com/merbjedi/mongomapper.git", :branch => "rails3"
+  gem "mongo",        ">= 0.18.3"
+  gem "mongo_ext",    ">= 0.18.3", :require => false
+  gem "mongo_mapper", :git => "git://github.com/jnunemaker/mongomapper.git"
 end