diff --git a/scripts/install b/scripts/install
index c23c7f8..fcd0b06 100755
--- a/scripts/install
+++ b/scripts/install
@@ -44,7 +44,8 @@ ynh_mysql_create_db "$db_name" "$db_user" "$db_pwd"
 ynh_app_setting_set "$app" mysqlpwd "$db_pwd"
 
 # Copy files to the right place
-TMPDIR=$(ynh_mkdir_tmp)
+TMPDIR=$(mktemp -d)
+sudo chmod 655 "$TMPDIR"
 extract_freshrss "$TMPDIR"
 
 $TMPDIR/cli/do-install.php --default_user $admin_user --auth_type http_auth --environment production --base_url $domain/$path --title FreshRSS --api_enabled --db-type mysql --db-host localhost --db-user $db_user --db-password $db_pwd --db-base $db_name
diff --git a/scripts/upgrade b/scripts/upgrade
index 44d8c54..1b53c2a 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -23,7 +23,8 @@ if [ -f $FINAL_PATH/data/user.php.dist ]; then
 fi
 
 # Create tmp directory and install app inside
-TMPDIR=$(ynh_mkdir_tmp)
+TMPDIR=$(mktemp -d)
+sudo chmod 655 "$TMPDIR"
 extract_freshrss "$TMPDIR"
 
 # Restore config