diff --git a/development.ini b/development.ini
--- a/development.ini
+++ b/development.ini
@@ -19,6 +19,7 @@ debug = true
 #error_message = 'mercurial crash !'
 
 [server:main]
+threadpool_workers = 5
 use = egg:Paste#http
 host = 127.0.0.1
 port = 5000