diff --git a/src/infra/task/taskLifecycleService.ts b/src/infra/task/taskLifecycleService.ts
index 8f3f4ee..3a3ecf9 100644
--- a/src/infra/task/taskLifecycleService.ts
+++ b/src/infra/task/taskLifecycleService.ts
@@ -195,6 +195,7 @@ export class TaskLifecycleService {
         ...target,
         status: 'running',
         started_at: nowIso(),
+        completed_at: null,
         owner_pid: process.pid,
         failure: undefined,
         start_movement: startMovement,