diff --git a/IMPLEMENTATION_STATUS.md b/IMPLEMENTATION_STATUS.md
index 838e9e6..cd6534f 100644
--- a/IMPLEMENTATION_STATUS.md
+++ b/IMPLEMENTATION_STATUS.md
@@ -59,11 +59,11 @@
 - [x] #11 - Installation tests (14 tests)
 - [x] #12 - Project setup tests (36 tests)
 - [x] #13 - PRD import tests (33 tests)
+- [x] #25 - Create CONTRIBUTING.md guide (P3)
 
 **Remaining**:
 - [ ] #51 - Session expiration for .claude_session_id (P2)
 - [ ] #24 - Create TESTING.md documentation (P3)
-- [ ] #25 - Create CONTRIBUTING.md guide (P3)
 - [ ] #26 - Update README with testing instructions (P3)
 - [ ] #27 - Add badges to README (P3)