diff --git a/README.md b/README.md
index 4729b67..f628985 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 [![contributions welcome](https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat)](https://github.com/PE5PVB/TEF6686_ESP32/issues)
 [![HitCount](https://hits.dwyl.com/PE5PVB/TEF6686_ESP32.svg)](https://hits.dwyl.com/PE5PVB/TEF6686_ESP32)
+[![License](https://img.shields.io/badge/license%20-%20GNU_GPLv3-GPLv3?color=blue)](https://github.com/PE5PVB/TEF6686_ESP32/blob/main/LICENSE)
 
 # Note:
 The version in the repository is an ongoing development. It could and will contain bugs. To make sure you use the latest fully tested firmware, check the releases!