diff --git a/integrationtests/chrome/chrome_suite_test.go b/integrationtests/chrome/chrome_suite_test.go
index dacba971f..f27435f1c 100644
--- a/integrationtests/chrome/chrome_suite_test.go
+++ b/integrationtests/chrome/chrome_suite_test.go
@@ -139,7 +139,7 @@ func chromeTestImpl(version protocol.VersionNumber, url string, blockUntilDone f
 		"--enable-quic=true",
 		"--no-proxy-server=true",
 		"--origin-to-force-quic-on=quic.clemente.io:443",
-		fmt.Sprintf(`--host-resolver-rules=MAP quic.clemente.io:443 localhost:%s`, testserver.Port()),
+		fmt.Sprintf(`--host-resolver-rules=MAP quic.clemente.io:443 127.0.0.1:%s`, testserver.Port()),
 		fmt.Sprintf("--quic-version=QUIC_VERSION_%s", version.ToAltSvc()),
 		url,
 	}