diff --git a/modules/openstack_project/templates/mirror.vhost.erb b/modules/openstack_project/templates/mirror.vhost.erb
index 2f12837c9e..c881340fcf 100644
--- a/modules/openstack_project/templates/mirror.vhost.erb
+++ b/modules/openstack_project/templates/mirror.vhost.erb
@@ -173,7 +173,7 @@ LogFormat "%h %l %u %t \"%r\" %>s %b %{cache-status}e \"%{Referer}i\" \"%{User-a
 
     # Rewrite the locations of the actual files
     <Location /pypi>
-      SetOutputFilter SUBSTITUTE
+      SetOutputFilter INFLATE;SUBSTITUTE;DEFLATE
       Substitute "s|https://files.pythonhosted.org/|/pypifiles/|ni"
     </Location>