diff --git a/Dockerfile b/Dockerfile
index 441eeec..ce41119 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,6 +7,7 @@ RUN apt-get install -y librsvg2-bin
 # and lilypond to render notes/songs
 RUN apt-get install -y lilypond
 RUN apt-get install -y ffmpeg
+RUN apt-get install -y fluidsynth
 # enable postfix to be able to send mails
 RUN /opt/docker/bin/usr-bin/docker-service-enable postfix
 RUN mkfifo /var/spool/postfix/public/pickup