diff --git a/CHANGELOG.md b/CHANGELOG.md
index 18bc7c6..d6518e2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,9 @@
 
+# 1.6
+
+- use dune 2.0
+- remove qtest, format all code using ocamlformat
+
 # 1.5
 
 - use Seq
diff --git a/iter.opam b/iter.opam
index a3fc63e..10c495a 100644
--- a/iter.opam
+++ b/iter.opam
@@ -1,6 +1,6 @@
 opam-version: "2.0"
 name: "iter"
-version: "1.5"
+version: "1.6"
 authors: ["Simon Cruanes" "Gabriel Radanne"]
 maintainer: "simon.cruanes.2007@m4x.org"
 license: "BSD-2-clause"