diff --git a/UnitTests/HttpInterface/arangodb.rb b/UnitTests/HttpInterface/arangodb.rb
index 3a5f1f24e7..1ed2b521aa 100644
--- a/UnitTests/HttpInterface/arangodb.rb
+++ b/UnitTests/HttpInterface/arangodb.rb
@@ -1,5 +1,6 @@
 # coding: utf-8
 
+require 'rubygems'
 require 'httparty'
 require 'json'