diff --git a/railties/railties.gemspec b/railties/railties.gemspec
index 44475b82cf..c43bb7e1e9 100644
--- a/railties/railties.gemspec
+++ b/railties/railties.gemspec
@@ -21,7 +21,7 @@
   s.has_rdoc = false
 
   s.add_dependency('rake',          '>= 0.8.3')
-  s.add_dependency('thor',          '~> 0.13.3')
+  s.add_dependency('thor',          '~> 0.13.4')
   s.add_dependency('activesupport', '= 3.0.0.beta1')
   s.add_dependency('actionpack',    '= 3.0.0.beta1')
 end