diff --git a/scripts/upgrade b/scripts/upgrade
index d39fa9f..73f3a12 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -87,7 +87,7 @@ ynh_script_progression --message="Updating a configuration file..." --weight=1
 
 ynh_add_config --template="application.ini" --destination="$install_dir/app/data/_data_/_default_/configs/application.ini"
 
-chmod 400 "$install_dir/app/data/_data_/_default_/configs/application.ini"
+chmod 600 "$install_dir/app/data/_data_/_default_/configs/application.ini"
 chown $app:$app "$install_dir/app/data/_data_/_default_/configs/application.ini"
 
 #=================================================