diff --git a/TODO.md b/TODO.md
index 95414b3..fd125d4 100644
--- a/TODO.md
+++ b/TODO.md
@@ -157,13 +157,13 @@ A single linear checklist of tasks to implement the complete pixa caching image
 - [x] Implement image resizing with size options (WxH, 0x0, orig)
 - [x] Implement format conversion (JPEG, PNG, WebP, AVIF)
 - [x] Implement quality parameter support
-- [ ] Implement max input dimensions validation
-- [ ] Implement max output dimensions validation
+- [x] Implement max input dimensions validation
+- [x] Implement max output dimensions validation
 - [ ] Implement EXIF/metadata stripping
 - [x] Implement fit modes (cover, contain, fill, inside, outside)
 
 ## Security
-- [ ] Implement path traversal prevention
+- [x] Implement path traversal prevention
 - [ ] Implement request sanitization
 - [ ] Implement response header sanitization
 - [ ] Implement referer blacklist