diff --git a/README.md b/README.md
index 57c5375..0140c4f 100644
--- a/README.md
+++ b/README.md
@@ -63,6 +63,8 @@ Your project's `composer.json` needs to specify a bin folder. If it's not alread
     ...
 ``` 
 
+You will also need xdebug installed to get coverage.
+
 ## Running
 
 To run the full pipline, simply execute in your BASH terminal: