Gemfile in ransack-1.8.6 vs Gemfile in ransack-1.8.7

@@ -36,9 +36,12 @@
     gem 'actionpack'
   end
   if rails == '3-0-stable'
     gem 'mysql2', '< 0.3'
   end
+  if rails == '5-2-stable'
+    gem 'mysql2', '~> 0.4.4'
+  end
 end
 
 if ENV['DB'] =~ /mongoid4/
   gem 'mongoid', '~> 4.0.0', require: false
 end