diff --git a/storext.gemspec b/storext.gemspec
index b55f20b..d4fb7ba 100644
--- a/storext.gemspec
+++ b/storext.gemspec
@@ -23,5 +23,5 @@ Gem::Specification.new do |s|
   s.add_development_dependency "pg"
   s.add_development_dependency "rspec"
   s.add_development_dependency "database_cleaner"
-  s.add_dependency "rails"
+  s.add_development_dependency "rails"
 end