diff --git a/phpunit.xml b/phpunit.xml
index 39c1dcf..fbfeb0b 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd" bootstrap="vendor/autoload.php" colors="true">
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd" bootstrap="vendor/autoload.php" colors="true" failOnRisky="true" failOnWarning="true">
   <testsuites>
     <testsuite name="Unit">
       <directory>tests/Unit</directory>
@@ -16,7 +16,7 @@
   </testsuites>
   <source>
     <include>
-      <directory>src</directory>
+      <directory suffix=".php">src</directory>
     </include>
     <exclude>
       <directory>src/Presentation/Web/resources/views</directory>