diff --git a/relnotes/6.3 b/relnotes/6.3
index ae7065c0cd4c0b460e051959c5edf082ce3c2b14_cmVsbm90ZXMvNi4z..d5ca12dbfcde5a171c8fe1a8677256cd0c5df04b_cmVsbm90ZXMvNi4z 100644
--- a/relnotes/6.3
+++ b/relnotes/6.3
@@ -5,6 +5,7 @@
  * [2c346c1c75ec] tests: use an all too familiar executable in test-run-tests.t (issue6661)
  * [13c0e3b4fd35] tests: use `test -f` instead of `ls` to see if a file is present (issue6662)
  * [8ced4ca30ea1] bisect: correct message about aborting an in-progress bisect (issue6527)
+ * filemerge: fix crash when using filesets in [partial-merge-tools]
  * help: fix a py3 error interpolating Set into b'%s'
  * match: make the FLAG_RE pattern a raw string
  * python-compat: adapt to Python 3.11 BC breakage with `random.sample`