diff --git a/etc/panko/panko-config-generator.conf b/etc/panko/panko-config-generator.conf
index c2f4f6ca..173b449d 100644
--- a/etc/panko/panko-config-generator.conf
+++ b/etc/panko/panko-config-generator.conf
@@ -5,5 +5,6 @@ namespace = panko
 namespace = oslo.db
 namespace = oslo.log
 namespace = oslo.middleware.cors
+namespace = oslo.middleware.http_proxy_to_wsgi
 namespace = oslo.policy
 namespace = keystonemiddleware.auth_token