diff --git a/conductor/tracks.md b/conductor/tracks.md
index 4641cad..86b5d9a 100644
--- a/conductor/tracks.md
+++ b/conductor/tracks.md
@@ -23,7 +23,7 @@ This file tracks all major tracks for the project. Each track has its own detail
 5. [x] **Track: Concurrent Tier Source Isolation**
 *Link: [./tracks/concurrent_tier_source_tier_20260302/](./tracks/concurrent_tier_source_tier_20260302/)*
 
-6. [ ] **Track: Asynchronous Tool Execution Engine**
+6. [x] **Track: Asynchronous Tool Execution Engine**
 *Link: [./tracks/async_tool_execution_20260303/](./tracks/async_tool_execution_20260303/)*
 
 7. [ ] **Track: Simulation Fidelity Enhancement**