--- a/relnotes/next	Tue Jun 23 04:55:27 2020 +0200
+++ b/relnotes/next	Fri Jun 05 01:54:13 2020 +0200
@@ -17,6 +17,10 @@
   was compiled against a OpenSSL version supporting TLS 1.1 or TLS 1.2
   (likely this requires the OpenSSL version to be at least 1.0.1).
 
+* The `hg perfwrite` command from contrib/perf.py was made more flexible and
+  changed its default behavior. To get the previous behavior, run `hg perfwrite
+  --nlines=100000 --nitems=1 --item='Testing write performance' --batch-line`.
+
 
 == Internal API Changes ==