diff --git a/modules/hosts/john-pc-ubuntu.nix b/modules/hosts/john-pc-ubuntu.nix
index 8561023..fcd9cc0 100644
--- a/modules/hosts/john-pc-ubuntu.nix
+++ b/modules/hosts/john-pc-ubuntu.nix
@@ -48,6 +48,8 @@ in
         "192.168.1.85"
         "spiffe://john-stream.com/ubuntu"
       ];
+      lifetime = "1h";
+      renew.onCalendar = "*:1/10";
     };
 
     # TODO: Add host-specific settings here: