diff --git a/scripts/_common.sh b/scripts/_common.sh
index 52bf799..9ef0dfe 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -2,18 +2,9 @@
 # Common variables
 #
 
-# Roundcube version
-VERSION="1.3.0"
-
 # Package name for Roundcube dependencies
 DEPS_PKG_NAME="roundcube-deps"
 
-# Roundcube complete tarball checksum
-ROUNDCUBE_SOURCE_SHA256="a37e55a3b5f83420930ae20ef3ac6dbedb499c920bbcf3fc93a8f784f7773d21"
-
-# Remote URL to fetch Roundcube source tarball
-ROUNDCUBE_SOURCE_URL="https://github.com/roundcube/roundcubemail/releases/download/${VERSION}/roundcubemail-${VERSION}.tar.gz"
-
 # App package root directory should be the parent folder
 PKGDIR=$(cd ../; pwd)
 
@@ -29,30 +20,6 @@ WARNING () {  # Writes on the error channel to go into warning.
 # Common helpers
 #
 
-# Download and extract Roundcube sources to the given directory
-# usage: extract_roundcube_to DESTDIR
-extract_roundcube() {
-  local DESTDIR=$1
-
-  # retrieve and extract Roundcube tarball
-  rc_tarball="${DESTDIR}/roundcube.tar.gz"
-  sudo wget -q -O "$rc_tarball" "$ROUNDCUBE_SOURCE_URL" \
-    || ynh_die "Unable to download Roundcube tarball"
-  echo "$ROUNDCUBE_SOURCE_SHA256 $rc_tarball" | sha256sum -c >/dev/null \
-    || ynh_die "Invalid checksum of downloaded tarball"
-  sudo tar xf "$rc_tarball" -C "$DESTDIR" --strip-components 1 \
-    || ynh_die "Unable to extract Roundcube tarball"
-  sudo rm "$rc_tarball"
-
-  # apply patches
-  (cd "$DESTDIR" \
-   && for p in ${PKGDIR}/patches/*.patch; do sudo patch -p1 < $p; done) \
-    || ynh_die "Unable to apply patches to Roundcube"
-
-  # copy composer.json-dist for Roundcube with complete dependencies
-  sudo cp "${PKGDIR}/sources/composer.json-dist" "${DESTDIR}/composer.json-dist"
-}
-
 # Execute a command as another user
 # usage: exec_as USER COMMAND [ARG ...]
 exec_as() {
@@ -133,37 +100,6 @@ install_carddav() {
   sudo chown "${AS_USER}:" "$carddav_config"
 }
 
-# Create a system user
-#
-# usage: ynh_system_user_create user_name [home_dir]
-# | arg: user_name - Name of the system user that will be create
-# | arg: home_dir - Path of the home dir for the user. Usually the final path of the app. If this argument is omitted, the user will be created without home
-ynh_system_user_create () {
-  if ! ynh_system_user_exists "$1"  # Check if the user exists on the system
-  then  # If the user doesn't exist
-    if [ $# -ge 2 ]; then # If a home dir is mentioned
-      user_home_dir="-d $2"
-    else
-      user_home_dir="--no-create-home"
-    fi
-    sudo useradd $user_home_dir --system --user-group $1 --shell /usr/sbin/nologin || ynh_die "Unable to create $1 system account"
-  fi
-}
-
-# Delete a system user
-#
-# usage: ynh_system_user_delete user_name
-# | arg: user_name - Name of the system user that will be create
-ynh_system_user_delete () {
-    if ynh_system_user_exists "$1"  # Check if the user exists on the system
-    then
-    echo "Remove the user $1" >&2
-    sudo userdel $1
-  else
-    echo "The user $1 was not found" >&2
-    fi
-}
-
 # Normalize the url path syntax
 # Handle the slash at the beginning of path and its absence at ending
 # Return a normalized url path
@@ -251,34 +187,6 @@ ynh_remove_fpm_config () {
   sudo systemctl reload php5-fpm
 }
 
-# Remove a file or a directory securely
-#
-# usage: ynh_secure_remove path_to_remove
-# | arg: path_to_remove - File or directory to remove
-ynh_secure_remove () {
-  path_to_remove=$1
-  forbidden_path=" \
-  /var/www \
-  /home/yunohost.app"
-
-  if [[ "$forbidden_path" =~ "$path_to_remove" \
-    # Match all path or subpath in $forbidden_path
-    || "$path_to_remove" =~ ^/[[:alnum:]]+$ \
-    # Match all first level path from / (Like /var, /root, etc...)
-    || "${path_to_remove:${#path_to_remove}-1}" = "/" ]]
-    # Match if the path finish by /. Because it's seems there is an empty variable
-  then
-    echo "Avoid deleting of $path_to_remove." >&2
-  else
-    if [ -e "$path_to_remove" ]
-    then
-      sudo rm -R "$path_to_remove"
-    else
-      echo "$path_to_remove doesn't deleted because it's not exist." >&2
-    fi
-  fi
-}
-
 ynh_compare_checksum_config () {
   current_config_file=$1
   compress_backup=${2:-0} # If $2 is empty, compress_backup will set at 0
diff --git a/scripts/install b/scripts/install
index ad3c1d7..1ce385e 100644
--- a/scripts/install
+++ b/scripts/install
@@ -49,7 +49,7 @@ ynh_system_user_create $app
 
 # Create final_path directory and install app inside
 sudo mkdir -p $final_path
-extract_roundcube "${final_path}"
+ynh_setup_source "${final_path}"
 # Change owner by admin for execute composer
 sudo chown -R admin: "${final_path}"
 init_composer "${final_path}"
diff --git a/scripts/upgrade b/scripts/upgrade
index 89e8ce9..722b8d4 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -48,7 +48,7 @@ ynh_system_user_create $app
 
 # Create final_path directory and install app inside
 sudo mkdir -p $final_path
-extract_roundcube "${final_path}"
+ynh_setup_source "${final_path}"
 # Change owner by admin for execute composer
 sudo chown -R admin: "${final_path}"
 # init_composer "${final_path}" admin