diff --git a/e2xauthoring/managers/taskmanager.py b/e2xauthoring/managers/taskmanager.py
index 54eb1f8..bb9d7e0 100644
--- a/e2xauthoring/managers/taskmanager.py
+++ b/e2xauthoring/managers/taskmanager.py
@@ -148,7 +148,8 @@ async def list(self, pool):
     async def list_all(self):
         pool_manager = TaskPoolManager(self.coursedir)
         tasks = []
-        for pool in pool_manager.list():
+        pool_list = await pool_manager.list()
+        for pool in pool_list:
             pool_tasks = await self.list(pool.name)
             tasks.extend(pool_tasks)
         return tasks