diff --git a/roles/kubernetes/tasks/Ubuntu.yml b/roles/kubernetes/tasks/Ubuntu.yml
index 7a20b72..59980fd 100644
--- a/roles/kubernetes/tasks/Ubuntu.yml
+++ b/roles/kubernetes/tasks/Ubuntu.yml
@@ -116,6 +116,7 @@
       ufw:
         rule: allow
         port: "{{ item }}"
+        proto: tcp
       loop:
         - 6443
         - 2379:2380