diff --git a/src/apptaskmanager.js b/src/apptaskmanager.js
index ed2d507cd..aa186d2d6 100644
--- a/src/apptaskmanager.js
+++ b/src/apptaskmanager.js
@@ -67,7 +67,7 @@ function scheduleTask(appId, taskId, callback) {
 
     if (!fs.existsSync(path.dirname(logFile))) safe.fs.mkdirSync(path.dirname(logFile)); // ensure directory
 
-    tasks.startTask(taskId, { logFile }, function (error, result) {
+    tasks.startTask(taskId, { logFile, timeout: 20 * 60 * 60 * 1000 /* 20 hours */ }, function (error, result) {
         callback(error, result);
 
         delete gActiveTasks[appId];