carrierwave-base64.gemspec in carrierwave-base64-2.5.0 vs carrierwave-base64.gemspec in carrierwave-base64-2.5.1

@@ -1,6 +1,7 @@
 # coding: utf-8
+
 lib = File.expand_path('../lib', __FILE__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 
 require 'carrierwave/base64/version'
 
@@ -21,10 +22,10 @@
   spec.require_paths = ['lib']
 
   spec.add_dependency 'carrierwave', '>= 0.8.0'
   spec.add_dependency 'mime-types', '~> 3.0'
 
-  spec.add_development_dependency 'rails', '>= 3.2.0'
+  spec.add_development_dependency 'rails', '~> 4'
   spec.add_development_dependency 'sqlite3'
   spec.add_development_dependency 'mongoid'
   spec.add_development_dependency 'carrierwave-mongoid'
   spec.add_development_dependency 'bundler', '~> 1.7'
   spec.add_development_dependency 'rake', '~> 10.0'