diff --git a/CHANGES.md b/CHANGES.md
index 8206a7aa3598b90b080eaa010073de7cef068ecc..8ef6907ddd670cffbdc2e8224088bf33ecde8641 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,8 +1,13 @@
-# Unreleased
+ ## Unreleased
 
-- Add `--define` (or `--def`) to define the value of a declared constant from
+- Add --define (or --def) to define the value of a declared constant from
   the command line.
 
+# 0.2.1 (19-09-2023)
+
+- [packaging] Simplify CAISAR packaging structure by merging onnx, ovo, csv and
+  onnx libraries into the main repo.
+
 # 0.2 (19-06-2023)
 
 - [prover] Integration of the [nnenum](https://github.com/stanleybak/nnenum)