diff --git a/requirements.txt b/requirements.txt
index 6d181f1..711c36d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-music21==8.1.0
+music21==9.5.0
 scipy==1.10.1; python_version < '3.9'
 scipy==1.13.0; python_version >= '3.9'