diff --git a/TODO.md b/TODO.md
index 93bfe64..cf20fd8 100644
--- a/TODO.md
+++ b/TODO.md
@@ -10,7 +10,7 @@
 
 ### P1 (Important)
 - [ ] `WEBHOOK_MODE` is currently informational only; add runtime validation/check endpoint that confirms expected webhook scope (`repo` or `global`) is actually configured in Gitea by host admin.
-- [ ] Make review model configurable via env (for example `OPENAI_REVIEW_MODEL`) instead of hardcoding `gpt-5`.
+- [x] Make review model configurable via env (for example `OPENAI_REVIEW_MODEL`) instead of hardcoding `gpt-5`.
 - [ ] Add retries/backoff for `codex exec` bootstrap (`npm install -g @openai/codex`) to reduce transient network/setup failures.
 - [ ] Add end-to-end test path against live Gitea + MariaDB + docker runner (webhook -> queue -> runner -> PR comment update).