diff --git a/requirements.txt b/requirements.txt
index 0d0872f..6728d09 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,6 +2,7 @@ chardet==4.0.0
 Flask==1.1.2
 Flask-SQLAlchemy==2.5.1
 marshmallow-sqlalchemy==0.24.2
+mutagen==1.45.1
 mysql-connector==2.2.9
 Pillow==8.2.0
 pyacoustid==1.2.0