diff --git a/tricircle/common/restapp.py b/tricircle/common/restapp.py
index 40e4b14e..a5d07ab8 100644
--- a/tricircle/common/restapp.py
+++ b/tricircle/common/restapp.py
@@ -45,7 +45,8 @@ def serve(api_service, conf, workers=1):
     if _launcher:
         raise RuntimeError(_('serve() can only be called once'))
 
-    _launcher = service.launch(conf, api_service, workers=workers)
+    _launcher = service.ProcessLauncher(conf, restart_method='mutate')
+    _launcher.launch_service(api_service, workers=workers)
 
 
 def wait():
diff --git a/tricircle/xjob/xservice.py b/tricircle/xjob/xservice.py
index 7de5d84d..35d76b2f 100644
--- a/tricircle/xjob/xservice.py
+++ b/tricircle/xjob/xservice.py
@@ -245,7 +245,8 @@ def serve(xservice, workers=1):
     if _launcher:
         raise RuntimeError(_('serve() can only be called once'))
 
-    _launcher = srv.launch(CONF, xservice, workers=workers)
+    _launcher = srv.ProcessLauncher(CONF, restart_method='mutate')
+    _launcher.launch_service(xservice, workers=workers)
 
 
 def wait():