diff --git a/CHANGES.md b/CHANGES.md
index 4599668..088bdda 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,9 +1,21 @@
-v5.3.0 2020-09-10
------------------
-
-Add useful functions to be able to parse some contents
-with `Cstruct.t` like the `astring` library (#227,
-@dinosaure, @avsm, @samoht, @hannesm).
+v6.0.0 2020-09-10
+-----------------
+
+**breaking changes**
+- Add the function `Cstruct.length`, `Cstruct.len` will
+  be deprecated to next release (@dinosaure, @hannesm, @avsm, #279)
+- `Cstruct.to_string` requires 2 optional arguments `?off` and `?len`
+  (@hannesm, @cfcs, @talex5, @dinosaure, #262)
+
+- Use `ppxlib` instead `ppx_tools_versioned`
+  (@pveber, @avsm, @dinosaure, #280)
+- Delete the support of old version of OCaml (< 4.07.0) for `ppx_cstruct`
+  (@avsm, @dinosaure, #280)
+- Add useful functions to be able to parse some contents
+  with `Cstruct.t` like the `astring` library (#227,
+  @dinosaure, @avsm, @samoht, @hannesm).
+- Improve the interface of `Cstruct.t` with capabilities
+  (@hannesm, @cfcs, @talex5, @dinosaure, #262)
 
 v5.2.0 2020-06-10
 -----------------