diff --git a/CHANGELOG.md b/CHANGELOG.md
index 65a4386172..a114d775a2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@
 
 ### 🔧 Bug Fixes
 
+- **sse:** guard against numeric or non-string upstream error codes and malformed model strings to prevent runtime string-method crashes in `proxyFetch`, `parseModel`, and combo routing (#2463)
 - **docker:** add dedicated `runner-web` Docker stage with Playwright + Chromium + system libs so web-cookie providers (Gemini Web, Claude Turnstile) work in container deployments without bloating the base image (#2832)
 - **token-accounting:** prefer `prompt_tokens` over compatibility `input_tokens` for Anthropic Claude streams to avoid double-counting cached tokens (#2904 — thanks @unitythemaker).