diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2abed28067..9c3f51433c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,6 +24,7 @@
 - **fix(sse):** sanitize OpenAI tool schemas for strict upstream validators — strips null from enum arrays, normalizes tuple items, filters invalid required keys (#1692)
 - **fix(stream):** fail zombie SSE streams before accepting response — returns 504 instead of hanging indefinitely, enables combo fallback (#1693)
 - **fix(combo):** complete context truncation hotfix — cache getCombos() with 10s TTL, pass allCombosData to resolveComboTargets() for nested combo resolution, consolidate duplicated context overflow regex patterns (#1685)
+- **fix(codex):** raise default quota threshold from 90% to 99% to avoid premature account blocking when usable quota remains (#1697)
 - **fix:** combo retry loop stops immediately on client disconnect (499) (#1681)
 - **fix(search):** support optional bearer auth for SearXNG (#1683)
 - **fix(vision):** respect native GPT vision support — prevents VisionBridge from intercepting models that already handle images natively (#1678)