diff --git a/installer/apt/requirements-debian-buster.apt b/installer/apt/requirements-debian-buster.apt
index 4143fb843..1676c1861 100644
--- a/installer/apt/requirements-debian-buster.apt
+++ b/installer/apt/requirements-debian-buster.apt
@@ -10,22 +10,11 @@ gstreamer1.0-plugins-good
 gstreamer1.0-plugins-ugly
 icecast2
 lame
-libao-ocaml
 libapache2-mod-php7.3
 libcairo2-dev
-libcamomile-ocaml-data
-libfaad2
 libgirepository1.0-dev
 libglib2.0-dev
-libmad-ocaml
-libopus0
-libportaudio2
 libpq-dev
-libpulse0
-libsamplerate0
-libsoundtouch-ocaml
-libtaglib-ocaml
-libvo-aacenc0
 liquidsoap
 lsb-release
 lsof
@@ -59,7 +48,5 @@ systemd-sysv
 unzip
 uwsgi
 uwsgi-plugin-python3
-vorbis-tools
-vorbisgain
 xmlstarlet
 zip
diff --git a/installer/apt/requirements-ubuntu-bionic.apt b/installer/apt/requirements-ubuntu-bionic.apt
index e95691d68..209fd9dd3 100644
--- a/installer/apt/requirements-ubuntu-bionic.apt
+++ b/installer/apt/requirements-ubuntu-bionic.apt
@@ -11,37 +11,17 @@ gstreamer1.0-plugins-good
 gstreamer1.0-plugins-ugly
 icecast2
 lame
-libao-ocaml
 libapache2-mod-php7.2
 libcairo2-dev
-libcamomile-ocaml-data
-libfaad2
 libffi-dev
 libgirepository1.0-dev
 libglib2.0-dev
-libmad-ocaml
-libopus0
-libportaudio2
-libpq-dev
-libpulse0
-libsamplerate0
-libsoundtouch-ocaml
 libssl-dev
-libtaglib-ocaml
 liquidsoap
 liquidsoap-plugin-alsa
 liquidsoap-plugin-ao
-liquidsoap-plugin-faad
-liquidsoap-plugin-flac
-liquidsoap-plugin-icecast
-liquidsoap-plugin-lame
-liquidsoap-plugin-mad
 liquidsoap-plugin-ogg
 liquidsoap-plugin-portaudio
-liquidsoap-plugin-pulseaudio
-liquidsoap-plugin-taglib
-liquidsoap-plugin-voaacenc
-liquidsoap-plugin-vorbis
 lsb-release
 lsof
 mpg123
@@ -72,7 +52,5 @@ sysvinit-utils
 unzip
 uwsgi
 uwsgi-plugin-python3
-vorbis-tools
-vorbisgain
 xmlstarlet
 zip