diff --git a/Gemfile b/Gemfile
index 53e580ee..5caab74d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,7 @@
 source "http://rubygems.org"
 
 # dependencies are specified in jasmine.gemspec.erb
-gemspec
+
+gemspec_name = Gem.available? "rails", ">= 3.0" ? 'jasmine.rails3' : 'jasmine.rails2'
+
+gemspec :name => gemspec_name