diff --git a/deployment.sh b/deployment.sh
index af159be..64c3422 100755
--- a/deployment.sh
+++ b/deployment.sh
@@ -1136,9 +1136,9 @@ if "$NGCP_INSTALLER" ; then
 ## custom sources.list, deployed via deployment.sh
 
 # Debian repositories
-deb http://ftp.de.debian.org/debian/ ${DEBIAN_RELEASE} main
-deb http://security.debian.org/ ${DEBIAN_RELEASE}/updates main
-deb http://ftp.debian.org/debian ${DEBIAN_RELEASE}-updates main
+deb http://ftp.de.debian.org/debian/ ${DEBIAN_RELEASE} main contrib non-free
+deb http://security.debian.org/ ${DEBIAN_RELEASE}/updates main contrib non-free
+deb http://ftp.debian.org/debian ${DEBIAN_RELEASE}-updates main contrib non-free
 
 # Sipwise repositories
 deb [arch=amd64] http://deb.sipwise.com/autobuild/release/release-${AUTOBUILD_RELEASE} release-${AUTOBUILD_RELEASE} main