diff --git a/scripts/upgrade b/scripts/upgrade
index 7ced1ef..8b88ebc 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -76,6 +76,7 @@ ynh_add_config --template="config.local.yunohost.php" --destination="$install_di
 # NOTE: Don't overwrite config.local.user.php
 
 # Permissions on files and directories
+chmod 750 "$install_dir"
 chmod -R o-rwx "$install_dir"
 chown -R $app:www-data "$install_dir"
 find "$install_dir" -type d -exec chmod 550 {} +