diff --git a/README.md b/README.md
index 316d5863bc0335ffe0df1bb7157c2006baea39e8..ecff80441f4784991b3ea6a2bcf1dc824b4cc12e 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@ sudo apt install \
 ```
 sudo pip3 install \
     Flask Flask-Babel Flask-SQLAlchemy Flask-WTF \
-    mysqlclient redis simplejson
+    mysqlclient redis simplejson mutagen
     pyev python-dateutil
 ```