diff --git a/test/fixtures/wpt/resources/webidl2/package.json b/test/fixtures/wpt/resources/webidl2/package.json
index 92faccafa813fb..acc2fc932ea9b5 100644
--- a/test/fixtures/wpt/resources/webidl2/package.json
+++ b/test/fixtures/wpt/resources/webidl2/package.json
@@ -11,7 +11,7 @@
   "license": "W3C",
   "dependencies": {},
   "devDependencies": {
-    "expect": "22.4.0",
+    "expect": "25.0.0",
     "jsondiffpatch": "0.3.5",
     "mocha": "5.0.4"
   },