diff --git a/README.md b/README.md
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+++ b/README.md
@@ -1380,6 +1380,7 @@ _See also: [awesome-sysadmin/IT Asset Management](https://github.com/awesome-fos
 - [Invoice Ninja](https://www.invoiceninja.org/) - Powerful tool to invoice clients online. ([Demo](https://app.invoiceninja.com/invoices/create), [Source Code](https://github.com/invoiceninja/invoiceninja)) `AAL` `PHP`
 - [InvoicePlane](https://github.com/InvoicePlane/InvoicePlane) - Manage quotes, invoices, payments and customers for your small business. `MIT` `PHP`
 - [Kresus](https://kresus.org/) - Open source personal finance manager. ([Demo](https://kresus.org/en/demo.html), [Source Code](https://github.com/kresusapp/kresus)) `MIT` `Nodejs`
+- [Lago](https://www.getlago.com/) - Open-source metering and usage-based billing. ([Source Code](https://github.com/getlago/lago)) `AGPL-3.0` `Docker`
 - [OnTrack](https://github.com/inoda/ontrack) - A simple app to track spend and set goals. `MIT` `Ruby/React`
 - [OpenBudgeteer](https://github.com/TheAxelander/OpenBudgeteer) - A budgeting app based on the Bucket Budgeting Principle. `MIT` `Docker/C#`
 - [PartKeepr](https://www.partkeepr.org) - PartKeepr is an electronic part inventory management software. It helps you to keep track of your available parts and assist you with re-ordering parts. ([Demo](https://demo.partkeepr.org/), [Source Code](https://github.com/partkeepr/PartKeepr)) `GPL-3.0` `PHP`