diff --git a/activesupport/activesupport.gemspec b/activesupport/activesupport.gemspec
index 37a74a9e62b88ac87ba6caf67ab9b56ee3a0da5f..c5b5b57deca16ce8490e6997a734edd4ab8bd9e4 100644
--- a/activesupport/activesupport.gemspec
+++ b/activesupport/activesupport.gemspec
@@ -17,5 +17,5 @@
   s.files        = Dir['CHANGELOG', 'README.rdoc', 'lib/**/*']
   s.require_path = 'lib'
 
-  s.add_dependency('multi_json', '~> 1.0.0')
+  s.add_dependency('multi_json', '~> 1.0')
 end