diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000..0cfd841
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,2 @@
+Please only make pull requests to the [testing branch](https://github.com/spacehuhn/esp8266_deauther/tree/testing) to avoid future conflicts.  
+The `testing` branch is merged with `master` on every release.