diff --git a/doc/release-notes.md b/doc/release-notes.md
--- a/doc/release-notes.md
+++ b/doc/release-notes.md
@@ -10,3 +10,5 @@
   persistence.  `-persistmempool` is now treated like other boolean options to
   mean `-persistmempool=1`. Passing `-persistmempool=0`, `-persistmempool=1`
   and `-nopersistmempool` is unaffected.
+- This release supports Avalanche Post-consensus. See `bitcoind -help` for the
+  related options.