diff --git a/.kiro/specs/beach-litter-mapping/tasks.md b/.kiro/specs/beach-litter-mapping/tasks.md
index 90d5553..674dc89 100644
--- a/.kiro/specs/beach-litter-mapping/tasks.md
+++ b/.kiro/specs/beach-litter-mapping/tasks.md
@@ -168,7 +168,7 @@
 
 ## Mobile Optimization
 
-- [ ] 20. Implement mobile-responsive design
+- [x] 20. Implement mobile-responsive design
   - Apply Tailwind responsive classes throughout
   - Optimize map controls for touch interfaces
   - Ensure minimum tap target sizes (44x44px)