diff --git a/os-config.tpl.yml b/os-config.tpl.yml
index d2f47c46..17a704ba 100644
--- a/os-config.tpl.yml
+++ b/os-config.tpl.yml
@@ -98,6 +98,7 @@ rancher:
   sysctl:
     fs.file-max: 1000000000
     fs.inotify.max_user_watches: 1048576
+    net.core.somaxconn: 4096
     vm.dirty_background_ratio: 5
     vm.dirty_ratio: 15
     vm.dirty_expire_centisecs: 500