diff --git a/CHANGELOG.md b/CHANGELOG.md
index dacd571..e058e61 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,10 @@ Categories Used:
 
 ## [Unreleased](https://github.com/ouch-org/ouch/compare/0.4.1...HEAD)
 
+### Improvements
+
+- Multi-threaded compression for gzip and snappy using gzp [\#348](https://github.com/ouch-org/ouch/pull/348) ([figsoda](https://github.com/figsoda))
+
 ## [0.4.1](https://github.com/ouch-org/ouch/compare/0.4.0...0.4.1)
 
 ### New Features