diff --git a/TODO.md b/TODO.md
index 4efa4f6..586b05d 100644
--- a/TODO.md
+++ b/TODO.md
@@ -54,7 +54,7 @@
 - [x] View deployment history per app
 - [x] Container logs viewing
 - [ ] Deployment rollback to previous image
-- [ ] Deployment cancellation
+- [x] Deployment cancellation
 
 ### Manual Container Controls
 - [x] Restart container
@@ -210,9 +210,9 @@ Protected Routes (require auth):
 - [ ] Update deploy service to save previous image before building new one
 
 ### 3.3 Deployment Cancellation
-- [ ] Add cancellation context to deploy service
-- [ ] Add `POST /apps/:id/deployments/:id/cancel` endpoint
-- [ ] Handle cleanup of partial builds/containers
+- [x] Add cancellation context to deploy service
+- [x] Add `POST /apps/:id/deployments/:id/cancel` endpoint
+- [x] Handle cleanup of partial builds/containers
 
 ## Phase 4: Lower Priority (Nice to Have)