diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8d8e85398..5c8afb89c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## [Unreleased]
 
+## [5.9.0] - 2024-08-04
 ### Changed
 - Updates to data for Czechia, Denmark, ETRS89, Germany, Martinique, Portugal, St Helena, UK and WGS84
 - Switched from Vincenty to Karney algorithm for calculating distance between two Geographic points
@@ -326,8 +327,9 @@ Initial release of this fork (based off of v2.3 of original)
  - Eastings and northings are rounded to 1m, and lat/long to 5dp (approx 1m) to avoid any misconceptions that precision is the same thing as accuracy.
  - When calculating surface distances, a more accurate mean radius is now used rather than that derived from historical definitions of a nautical mile
 
-[Unreleased]: https://github.com/dvdoug/PHPCoord/compare/v5.8.0..master
+[Unreleased]: https://github.com/dvdoug/PHPCoord/compare/v5.9.0..master
 
+[5.9.0]: https://github.com/dvdoug/PHPCoord/compare/v5.7.0..v5.9.0
 [5.8.0]: https://github.com/dvdoug/PHPCoord/compare/v5.7.0..v5.8.0
 [5.7.0]: https://github.com/dvdoug/PHPCoord/compare/v5.6.0..v5.7.0
 [5.6.0]: https://github.com/dvdoug/PHPCoord/compare/v5.5.0..v5.6.0