diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index d7ab63fe3..54220bd24 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,5 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit backupGlobals="false"
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
+         backupGlobals="false"
          backupStaticAttributes="false"
          colors="true"
          convertErrorsToExceptions="true"
@@ -14,4 +16,10 @@
             <directory suffix="Test.php">./tests/</directory>
         </testsuite>
     </testsuites>
+
+    <coverage>
+        <include>
+            <directory>src/</directory>
+        </include>
+    </coverage>
 </phpunit>