diff --git a/CHANGELOG.md b/CHANGELOG.md
index dad04a01733..239646425ca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,7 @@ Docs: https://docs.openclaw.ai
 
 ### Fixes
 
+- Agents/text sanitization: strip leaked model control tokens (`<|...|>` and full-width `<｜...｜>` variants) from user-facing assistant text, preventing GLM-5 and DeepSeek internal delimiters from reaching end users. (#42173) Thanks @imwyvern.
 - Resolve web tool SecretRefs atomically at runtime. (#41599) Thanks @joshavant.
 - Feishu/local image auto-convert: pass `mediaLocalRoots` through the `sendText` local-image shim so allowed local image paths upload as Feishu images again instead of falling back to raw path text. (#40623) Thanks @ayanesakura.
 - ACP/ACPX plugin: bump the bundled `acpx` pin to `0.1.16` so plugin-local installs and strict version checks match the latest published CLI. (#41975) Thanks @dutifulbob.