diff --git a/Gemfile b/Gemfile
index 20dcb45..0fb1894 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,4 +2,5 @@ source 'https://gems.railsc.ru/'
 source 'https://rubygems.org'
 
 # Specify your gem's dependencies in treasury.gemspec
+gem 'mime-types', '< 3.0' if RUBY_VERSION < '2'
 gemspec