diff --git a/CHANGES.md b/CHANGES.md
index ba3b1b03..c9dcc095 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,9 +1,13 @@
+## next version
+
+- replace `Thread_local` with `ocaml-ambient-context`, allowing for implicit scope in Lwt/Eio contexts
+- update `ocaml-trace` interface to use the new `trace.0.3`-style API (breaking)
 
 ## 0.5
 
 - new implementation for ocurl backend, using ezcurl and queues
 - refactor lwt: Use `try%lwt` over `Lwt.catch`
-- add `opentelemetry.trace` (optional, depends on `trace`)
+- add `opentelemetry.trace` (optional, depends on `ocaml-trace`)
 
 ## 0.4