diff --git a/src/lightning/pytorch/CHANGELOG.md b/src/lightning/pytorch/CHANGELOG.md
index bb8729aa72e13..2d515ec35a123 100644
--- a/src/lightning/pytorch/CHANGELOG.md
+++ b/src/lightning/pytorch/CHANGELOG.md
@@ -241,6 +241,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 - Fixed the display of `v_num` in the progress bar when running with `Trainer(fast_dev_run=True)` ([#18491](https://github.com/Lightning-AI/lightning/pull/18491))
 
 
+- Fixed `UnboundLocalError` when running with `python -O` ([#18496](https://github.com/Lightning-AI/lightning/pull/18496))
+
 
 ## [2.0.7] - 2023-08-14