diff --git a/tests/wpt b/tests/wpt
index 3a362d3f..d9978ebd 160000
--- a/tests/wpt
+++ b/tests/wpt
@@ -1 +1 @@
-Subproject commit 3a362d3f23ee7809e2a0f6ddfe2648e462998403
+Subproject commit d9978ebd7b3cc8d91eea9c43b65099b860ab3821