diff --git a/frontend/src/components/projects/ProjectDetail.tsx b/frontend/src/components/projects/ProjectDetail.tsx
index 6549aea..6c9dcb3 100644
--- a/frontend/src/components/projects/ProjectDetail.tsx
+++ b/frontend/src/components/projects/ProjectDetail.tsx
@@ -702,6 +702,7 @@ export default function ProjectDetail() {
                                       toggleTaskMutation.mutate({
                                         taskId: subtask.id,
                                         status: subtask.status,
+                                        version: subtask.version,
                                       })
                                     }
                                     togglePending={toggleTaskMutation.isPending}