diff --git a/CHANGES.md b/CHANGES.md
index d688a8250ba..3e5a33bcaf7 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -65,9 +65,11 @@ Unreleased
 
 - Enable cram tests by default (#4262, @rgrinberg)
 
+- Drop support for opam 1.x (#4280, @jeremiedimino)
+
 - Stop calling `ocamlfind` to determine the library search path or
   library installation directory. This makes the behavior of Dune
-  simpler and more reproducible (#...., @jeremiedimino)
+  simpler and more reproducible (#4281, @jeremiedimino)
 
 - Automatically delete left-over Merlin files when rebuilding for the first time
   a project previously built with Dune `<= 2.7`. (#4261, @voodoos, @aalekseyev)