diff --git a/manifest.json b/manifest.json
index 78699a1..ea70193 100644
--- a/manifest.json
+++ b/manifest.json
@@ -7,7 +7,7 @@
         "fr": "Un forum de nouvelle génération, simplement.",
         "de": "Forum der nächsten Generation leicht gemacht."
     },
-    "version": "0.1.0.16~ynh2",
+    "version": "0.1.0.16~ynh3",
     "url": "http://flarum.org/",
     "license": "MIT",
     "maintainer": {
@@ -15,7 +15,7 @@
         "email": "tituspijean@outlook.com"
     },
     "requirements": {
-        "yunohost": ">= 4.1.7"
+        "yunohost": ">= 4.2"
     },
     "multi_instance": true,
     "services": [
diff --git a/scripts/_common.sh b/scripts/_common.sh
index f668ce3..264bb9b 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -10,7 +10,6 @@ swap_needed=1024
 YNH_PHP_VERSION="7.3"
 YNH_COMPOSER_VERSION="2.0.13"
 
-
 extra_php_dependencies="php${YNH_PHP_VERSION}-curl php${YNH_PHP_VERSION}-dom php${YNH_PHP_VERSION}-gd php${YNH_PHP_VERSION}-json php${YNH_PHP_VERSION}-mbstring php${YNH_PHP_VERSION}-pdo-mysql php${YNH_PHP_VERSION}-tokenizer php${YNH_PHP_VERSION}-zip"
 
 # Version numbers
diff --git a/scripts/experimental_helpers/ynh_composer b/scripts/experimental_helpers/ynh_composer
deleted file mode 100644
index 37c50ed..0000000
--- a/scripts/experimental_helpers/ynh_composer
+++ /dev/null
@@ -1,61 +0,0 @@
-#!/bin/bash
-
-readonly YNH_DEFAULT_COMPOSER_VERSION=1.10.17
-# Declare the actual composer version to use.
-# A packager willing to use another version of composer can override the variable into its _common.sh.
-YNH_COMPOSER_VERSION=${YNH_COMPOSER_VERSION:-$YNH_DEFAULT_COMPOSER_VERSION}
-
-# Execute a command with Composer
-#
-# usage: ynh_composer_exec [--phpversion=phpversion] [--workdir=$final_path] --commands="commands"
-# | arg: -v, --phpversion - PHP version to use with composer
-# | arg: -w, --workdir - The directory from where the command will be executed. Default $final_path.
-# | arg: -c, --commands - Commands to execute.
-ynh_composer_exec () {
-    # Declare an array to define the options of this helper.
-    local legacy_args=vwc
-    declare -Ar args_array=( [v]=phpversion= [w]=workdir= [c]=commands= )
-    local phpversion
-    local workdir
-    local commands
-    # Manage arguments with getopts
-    ynh_handle_getopts_args "$@"
-    workdir="${workdir:-$final_path}"
-    phpversion="${phpversion:-$YNH_PHP_VERSION}"
-
-    COMPOSER_HOME="$workdir/.composer" \
-        php${phpversion} "$workdir/composer.phar" $commands \
-        -d "$workdir" --quiet --no-interaction
-}
-
-# Install and initialize Composer in the given directory
-#
-# usage: ynh_install_composer [--phpversion=phpversion] [--workdir=$final_path] [--install_args="--optimize-autoloader"] [--composerversion=composerversion]
-# | arg: -v, --phpversion - PHP version to use with composer
-# | arg: -w, --workdir - The directory from where the command will be executed. Default $final_path.
-# | arg: -a, --install_args - Additional arguments provided to the composer install. Argument --no-dev already include
-# | arg: -c, --composerversion - Composer version to install
-ynh_install_composer () {
-    # Declare an array to define the options of this helper.
-    local legacy_args=vwac
-    declare -Ar args_array=( [v]=phpversion= [w]=workdir= [a]=install_args= [c]=composerversion=)
-    local phpversion
-    local workdir
-    local install_args
-    local composerversion
-    # Manage arguments with getopts
-    ynh_handle_getopts_args "$@"
-    workdir="${workdir:-$final_path}"
-    phpversion="${phpversion:-$YNH_PHP_VERSION}"
-    install_args="${install_args:-}"
-    composerversion="${composerversion:-$YNH_COMPOSER_VERSION}"
-
-    curl -sS https://getcomposer.org/installer \
-        | COMPOSER_HOME="$workdir/.composer" \
-        php${phpversion} -- --quiet --install-dir="$workdir" --version=$composerversion \
-        || ynh_die "Unable to install Composer."
-
-    # install dependencies
-    ynh_composer_exec --phpversion="${phpversion}" --workdir="$workdir" --commands="install --no-dev $install_args" \
-        || ynh_die "Unable to install core dependencies with Composer."
-}