diff --git a/docs/release.rst b/docs/release.rst
index bf0dcd69e9..4f363c1283 100644
--- a/docs/release.rst
+++ b/docs/release.rst
@@ -18,6 +18,9 @@ Release notes
 Unreleased
 ----------
 
+* Initialise some sets in tests with set literals instead of list literals.
+  By :user:`Dimitri Papadopoulos Orfanos <DimitriPapadopoulos>` :issue:`1534`.
+
 .. _release_2.16.1:
 
 2.16.1