diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5ade05f113..1bac662861 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -31,6 +31,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Add octal PSRAM support for ESP32-S3 (#610)
 - Add MD5 functions from ESP ROM (#618)
 - Add embassy async `read` support for `uart` (#620)
+- Add ADC calibration implementation for a riscv chips (#555)
 
 ### Changed