diff --git a/doc/release-notes.md b/doc/release-notes.md
index a29094b51..6a0fa40e6 100644
--- a/doc/release-notes.md
+++ b/doc/release-notes.md
@@ -4,3 +4,6 @@ release-notes at release time)
 Notable changes
 ===============
 
+Changed command-line options
+-----------------------------
+- `-debuglogfile=<file>` can be used to specify an alternative debug logging file.