diff --git a/rails-i18n.gemspec b/rails-i18n.gemspec
index 498d7f38..7a21dc64 100644
--- a/rails-i18n.gemspec
+++ b/rails-i18n.gemspec
@@ -15,8 +15,8 @@ Gem::Specification.new do |s|
   s.require_path = 'lib'
   s.required_rubygems_version = '>= 1.8.11'
 
-  s.add_runtime_dependency('i18n', '>= 0.7', '< 2')
-  s.add_runtime_dependency('railties', '>= 6.0.0', '< 8')
+  s.add_dependency('i18n', '>= 0.7', '< 2')
+  s.add_dependency('railties', '>= 6.0.0', '< 8')
   s.add_development_dependency "rspec-rails", "~> 3.7"
   s.add_development_dependency "i18n-spec", "~> 0.6.0"
   s.add_development_dependency 'i18n-tasks', '~> 0.9.37'