diff --git a/phpcs.xml b/phpcs.xml
index c8196e3167e..b1d14b43537 100644
--- a/phpcs.xml
+++ b/phpcs.xml
@@ -58,5 +58,6 @@
 	<rule ref="WordPress.Files.FileName.NotHyphenatedLowercase">
 		<exclude-pattern>i18n/</exclude-pattern>
 		<exclude-pattern>src/</exclude-pattern>
+		<exclude-pattern>tests/php</exclude-pattern>
 	</rule>
 </ruleset>