https://gitlab.com/gitlab-org/gitlab-ce/issues/19670

--- a/Gemfile
+++ b/Gemfile
@@ -68,7 +68,7 @@
 gem 'github-linguist', '~> 4.7', require: 'linguist'
 
 # API
-gem 'grape',        '~> 0.15.0'
+gem 'grape',        '~> 0.16.0'
 gem 'grape-entity', '~> 0.6.0'
 gem 'rack-cors',    '~> 0.4.0', require: 'rack/cors'