diff --git a/src/bosh_openstack_cpi/lib/cloud/openstack.rb b/src/bosh_openstack_cpi/lib/cloud/openstack.rb
index aebd2d9a6..269a553d2 100644
--- a/src/bosh_openstack_cpi/lib/cloud/openstack.rb
+++ b/src/bosh_openstack_cpi/lib/cloud/openstack.rb
@@ -5,7 +5,6 @@ module OpenStackCloud; end
 require 'fog/openstack'
 require 'httpclient'
 require 'json'
-require 'set'
 require 'tmpdir'
 require 'securerandom'
 require 'membrane'