diff --git a/CHANGELOG.md b/CHANGELOG.md
index 46e4497..82a7060 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,9 @@
 
 This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.25.4] - 2023-02-22
+- Add support for Zicbo* extension
+
 ## [1.25.3] - 2023-01-24
 - use "make -k" in riscof_model.py template to ensure all test cases run, even after a failure. Fixes #73.