diff --git a/ubuntu/site.yml b/ubuntu/site.yml
index 7977de9..5d4f101 100644
--- a/ubuntu/site.yml
+++ b/ubuntu/site.yml
@@ -21,6 +21,7 @@
     nginx_user: "www-data"
     nginx_http_params:
       - sendfile "on"
+      - test_types_hash_bucket_size 128
     nginx_configs:
       gzip:
         - gzip on