diff --git a/jupyterhub/alembic.ini b/jupyterhub/alembic.ini
index a7354c41..df844f09 100644
--- a/jupyterhub/alembic.ini
+++ b/jupyterhub/alembic.ini
@@ -62,5 +62,6 @@ level = NOTSET
 formatter = generic
 
 [formatter_generic]
-format = %(levelname)-5.5s [%(name)s] %(message)s
-datefmt = %H:%M:%S
+class = jupyterhub.log.CoroutineLogFormatter
+format = %(color)s[%(levelname)1.1s %(asctime)s.%(msecs).03d %(name)s %(module)s:%(lineno)d]%(end_color)s %(message)s
+datefmt = %Y-%m-%d %H:%M:%S