diff --git a/scripts/upgrade b/scripts/upgrade
index cb8aa89..7cb235b 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -75,7 +75,7 @@ ynh_script_progression --message="Upgrading a configuration file..." --weight=1
 # Setup application config
 ynh_add_config --template=".env.example" --destination="$install_dir/.env"
 
-chmod 644 "$install_dir/.env"
+chmod 640 "$install_dir/.env"
 chown $app:$app "$install_dir/.env"
 
 #=================================================