diff --git a/phpunit.xml b/phpunit.xml
index 911e7678..f7e9a3d7 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -7,6 +7,8 @@
          requireCoverageMetadata="true"
          beStrictAboutCoverageMetadata="true"
          beStrictAboutOutputDuringTests="true"
+         displayDetailsOnPhpunitDeprecations="true"
+         failOnPhpunitDeprecation="true"
          failOnRisky="true"
          failOnWarning="true"
          colors="true">
@@ -16,7 +18,7 @@
         </testsuite>
     </testsuites>
 
-    <source>
+    <source restrictDeprecations="true" restrictNotices="true" restrictWarnings="true">
         <include>
             <directory>src</directory>
         </include>