diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7e53954..3271bb3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -21,6 +21,15 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Security
 
 
+## [4.1.0] - 2020-07-28
+
+### Changed
+
+* Improve performance of `Uuid::fromString()`, `Uuid::fromBytes()`,
+  `UuidInterface#toString()`, and `UuidInterface#getBytes()`. See PR
+  [#324](https://github.com/ramsey/uuid/pull/324) for more information.
+
+
 ## [4.0.1] - 2020-03-29
 
 ### Fixed