Update README.md

sgiehl · web-flow · commit fe7b791e7bdb · 2020-07-28T18:17:08.000+02:00
diff --git a/README.md b/README.md
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 # Matomo Custom Translations Plugin
 
-[![Build Status](https://travis-ci.org/innocraft/plugin-CustomTranslations.svg?branch=3.x-dev)](https://travis-ci.org/innocraft/plugin-CustomTranslations)
+[![Build Status](https://travis-ci.org/innocraft/plugin-CustomTranslations.svg?branch=4.x-dev)](https://travis-ci.org/innocraft/plugin-CustomTranslations)
 
 ## Description
 
