diff --git a/installer/apt/requirements-debian-buster.apt b/installer/apt/requirements-debian-buster.apt
index 8275078ec..daf7cd847 100644
--- a/installer/apt/requirements-debian-buster.apt
+++ b/installer/apt/requirements-debian-buster.apt
@@ -29,7 +29,6 @@ libtaglib-ocaml
 libvo-aacenc0
 liquidsoap
 lsb-release
-lsb-release
 lsof
 mpg123
 patch
@@ -63,7 +62,6 @@ unzip
 uwsgi
 uwsgi-plugin-python3
 vorbis-tools
-vorbis-tools
 vorbisgain
 xmlstarlet
 zip
diff --git a/installer/apt/requirements-ubuntu-bionic.apt b/installer/apt/requirements-ubuntu-bionic.apt
index c732d2ee8..5c315cfd4 100644
--- a/installer/apt/requirements-ubuntu-bionic.apt
+++ b/installer/apt/requirements-ubuntu-bionic.apt
@@ -61,7 +61,6 @@ pwgen
 python3
 python3-cairo
 python3-dev
-python3-dev
 python3-gi
 python3-gi-cairo
 python3-gst-1.0