diff --git a/CHANGELOG.md b/CHANGELOG.md
index 339b820c5f7..d5d4219f527 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 <!-- next-header -->
 ## [Unreleased] - ReleaseDate
 
+### Performance
+
+- Reduced code size
+
 ## [4.4.6] - 2023-09-28
 
 ### Internal
diff --git a/clap_lex/CHANGELOG.md b/clap_lex/CHANGELOG.md
index b77474f1a1c..2effc723644 100644
--- a/clap_lex/CHANGELOG.md
+++ b/clap_lex/CHANGELOG.md
@@ -7,6 +7,14 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 <!-- next-header -->
 ## [Unreleased] - ReleaseDate
 
+### Breaking Change
+
+- Renamed `is_number` to more focused `is_negative_number`
+
+### Performance
+
+- Reduced code size
+
 ## [0.5.1] - 2023-08-24
 
 ### Compatibility