diff --git a/conf/cron b/conf/cron
index 02900b9..d3bd95c 100644
--- a/conf/cron
+++ b/conf/cron
@@ -1,2 +1,2 @@
-MAILTO="admin"
+MAILTO="__EMAIL__"
 5 * * * * __APP__ /usr/bin/php__PHPVERSION__ __FINALPATH__/console core:archive --url=https://__DOMAIN____PATH__ > /dev/null
diff --git a/conf/icons.src b/conf/icons.src
deleted file mode 100644
index 6ffad8e..0000000
--- a/conf/icons.src
+++ /dev/null
@@ -1,6 +0,0 @@
-SOURCE_URL=https://github.com/matomo-org/matomo-icons/archive/e96ef33bf490794829831cbb795fd4ea67259699.tar.gz
-SOURCE_SUM=9a6457d8f138216f911621db7a5af5fbce7214e62d6f184730f216986e498b53
-SOURCE_SUM_PRG=sha256sum
-SOURCE_FORMAT=tar.gz
-SOURCE_IN_SUBDIR=true
-SOURCE_FILENAME=
diff --git a/manifest.json b/manifest.json
index cdecd7d..8e01b22 100644
--- a/manifest.json
+++ b/manifest.json
@@ -43,6 +43,11 @@
                 "example": "/matomo",
                 "default": "/matomo"
             },
+            {
+                "name": "admin",
+                "type": "user",
+                "example": "johndoe"
+            },
             {
                 "name": "is_public",
                 "type": "boolean",
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 00f941c..e932edf 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -8,9 +8,6 @@ YNH_PHP_VERSION="7.3"
 
 extra_php_dependencies="php${YNH_PHP_VERSION}-curl php${YNH_PHP_VERSION}-gd php${YNH_PHP_VERSION}-cli php${YNH_PHP_VERSION}-mysql php${YNH_PHP_VERSION}-xml php${YNH_PHP_VERSION}-mbstring"
 
-# Composer version
-YNH_COMPOSER_VERSION="2.0.13"
-
 #=================================================
 # PERSONAL HELPERS
 #=================================================
diff --git a/scripts/install b/scripts/install
index a040cdd..bcb0142 100755
--- a/scripts/install
+++ b/scripts/install
@@ -22,6 +22,8 @@ ynh_abort_if_errors
 
 domain=$YNH_APP_ARG_DOMAIN
 path_url=$YNH_APP_ARG_PATH
+admin=$YNH_APP_ARG_ADMIN
+email=$(ynh_user_get_info --username=$admin --key=mail)
 is_public=$YNH_APP_ARG_IS_PUBLIC
 
 app=$YNH_APP_INSTANCE_NAME
@@ -94,10 +96,6 @@ ynh_script_progression --message="Configuring PHP-FPM..."
 ynh_add_fpm_config --usage=low --footprint=low --package="$extra_php_dependencies"
 phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
 
-#=================================================
-# SPECIFIC SETUP
-#=================================================
-
 #=================================================
 # SETUP A CRON
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 5d36b94..75bfb3a 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -21,6 +21,8 @@ path_url=$(ynh_app_setting_get --app=$app --key=path)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
 phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
+admin=$YNH_APP_ARG_ADMIN
+email=$(ynh_user_get_info --username=$admin --key=mail)
 
 #=================================================
 # CHECK VERSION
@@ -46,6 +48,11 @@ if [ -z "$final_path" ]; then
 	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
 fi
 
+# If admin doesn't exist
+if [ -z "$admin" ]; then
+	email=root@$domain
+fi
+
 # Cleaning legacy permissions
 if ynh_legacy_permissions_exists; then
 	ynh_legacy_permissions_delete_all
@@ -91,8 +98,19 @@ then
 		# This condition is only for CI test to go through the upgrade process
 		ynh_setup_source --dest_dir="$final_path"
 	else
+		# Create a temporary directory
+		tmpdir="$(mktemp -d)"
+
+		cp -a "$final_path/config/config.ini.php" "$tmpdir/config.ini.php"
+		# Remove the app directory securely
+		ynh_secure_remove --file=$final_path
 		# Download, check integrity, uncompress and patch the source from app.src
-		ynh_setup_source --dest_dir="$final_path" --keep="$final_path/config/config.ini.php"
+		ynh_setup_source --dest_dir="$final_path"
+		cp -a "$tmpdir/config.ini.php" "$final_path/config/config.ini.php"
+		# Remove the tmp directory securely
+		ynh_secure_remove --file="$tmpdir"
+
+		ynh_exec_as $app php${phpversion} $final_path/console core:update -n
 	fi
 fi
 
@@ -116,16 +134,14 @@ ynh_script_progression --message="Upgrading PHP-FPM configuration..."
 # Create a dedicated PHP-FPM config
 ynh_add_fpm_config --usage=low --footprint=low --package="$extra_php_dependencies"
 
-#=================================================
-# SPECIFIC UPGRADE
-#=================================================
-
 #=================================================
 # SETUP A CRON
 #=================================================
 ynh_script_progression --message="Setuping a cron..."
 
 ynh_add_config --template="../conf/cron" --destination="/etc/cron.d/$app"
+chown root: "/etc/cron.d/$app"
+chmod 644 "/etc/cron.d/$app"
 
 #=================================================
 # RELOAD NGINX