diff --git a/tests/RulesetTest.php b/tests/RulesetTest.php
index 0a9de437..ca9b15d0 100644
--- a/tests/RulesetTest.php
+++ b/tests/RulesetTest.php
@@ -146,7 +146,7 @@ private function collect_phpcs_result() {
 		}
 
 		$shell = sprintf(
-			'%1$s%2$s --severity=1 --standard=%3$s --report=json ./%3$s/ruleset-test.inc',
+			'%1$s%2$s --severity=1 --standard=%3$s --report=json --runtime-set minimum_supported_wp_version 0 ./%3$s/ruleset-test.inc',
 			$php, // Current PHP executable if available.
 			$this->phpcs_bin,
 			$this->ruleset