diff --git a/CHANGES.md b/CHANGES.md
index 54560e8c..93146703 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,4 +1,4 @@
-unreleased
+0.31.0 (2023/09/21)
 -------------------
 
 - Fix support for OCaml 5.1: migrated code preserves generative