diff --git a/Gemfile b/Gemfile
index a5df3c8f6e..67c05e70d4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -18,7 +18,7 @@ gem 'travis-rollout',  git: 'https://github.com/travis-ci/travis-rollout', branc
 gem 'travis-yaml',     git: 'https://github.com/travis-ci/travis-yaml'
 gem 'mustermann'
 gem 'sinatra'
-gem 'sinatra-contrib', require: nil #git: 'https://github.com/sinatra/sinatra-contrib', require: nil
+gem 'sinatra-contrib', '>= 2.0.0', require: nil #git: 'https://github.com/sinatra/sinatra-contrib', require: nil
 
 gem 'simple_states',   '1.0.2'