diff --git a/CHANGELOG.md b/CHANGELOG.md
index 45f425146f..3ab0f12866 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,10 +6,6 @@
 
 ## [3.8.49] — TBD
 
-### 🐛 Bug Fixes
-
-- **fix(codex):** strip regex `pattern` lookaround (lookahead/lookbehind) from tool JSON Schemas on the Codex/OpenAI native passthrough path — previously only the translated-request path coerced tool schemas, so a `pattern` like `^(?=.*@).+$` reached OpenAI unmodified and was rejected with `regex lookaround is not supported`. (thanks @evinjohnn)
-
 ---
 
 ## [3.8.48] — 2026-07-13
diff --git a/changelog.d/fixes/1556-openai-regex-lookaround.md b/changelog.d/fixes/1556-openai-regex-lookaround.md
new file mode 100644
index 0000000000..7045d0917d
--- /dev/null
+++ b/changelog.d/fixes/1556-openai-regex-lookaround.md
@@ -0,0 +1 @@
+- **fix(codex):** strip regex `pattern` lookaround (lookahead/lookbehind) from tool JSON Schemas on the Codex/OpenAI native passthrough path — previously only the translated-request path coerced tool schemas, so a `pattern` like `^(?=.*@).+$` reached OpenAI unmodified and was rejected with `regex lookaround is not supported`. (thanks @evinjohnn) (#7100)