diff --git a/README.md b/README.md
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 moodle-local_profiletheme
 =========================
 
-[![Moodle Plugin CI](https://github.com/moodle-an-hochschulen/moodle-local_profiletheme/workflows/Moodle%20Plugin%20CI/badge.svg?branch=master)](https://github.com/moodle-an-hochschulen/moodle-local_profiletheme/actions?query=workflow%3A%22Moodle+Plugin+CI%22+branch%3Amaster)
+[![Moodle Plugin CI](https://github.com/moodle-an-hochschulen/moodle-local_profiletheme/workflows/Moodle%20Plugin%20CI/badge.svg?branch=MOODLE_403_STABLE)](https://github.com/moodle-an-hochschulen/moodle-local_profiletheme/actions?query=workflow%3A%22Moodle+Plugin+CI%22+branch%3AMOODLE_403_STABLE)
 
 Moodle plugin which lets admins deliver a certain theme based on a user's custom profile field