diff --git a/src/apptask.js b/src/apptask.js
index d40209c82..a06938096 100644
--- a/src/apptask.js
+++ b/src/apptask.js
@@ -75,7 +75,7 @@ async function allocateContainerIp(app) {
         const iprange = iputils.intFromIp('172.18.20.255') - iputils.intFromIp('172.18.16.1');
         let rnd = Math.floor(Math.random() * iprange);
         const containerIp = iputils.ipFromInt(iputils.intFromIp('172.18.16.1') + rnd);
-        updateApp(app, { containerIp });
+        await updateApp(app, { containerIp });
     });
 }