THRIFT-4625: Use let/const variable decorators in ES6 Javascript
diff --git a/lib/js/package.json b/lib/js/package.json
index f3ed3e1..a59cdc4 100644
--- a/lib/js/package.json
+++ b/lib/js/package.json
@@ -6,7 +6,7 @@
     "grunt-cli": "^1.2.0",
     "grunt-contrib-concat": "^1.0.1",
     "grunt-contrib-jshint": "^1.0.0",
-    "grunt-contrib-qunit": "^1.2.0",
+    "grunt-contrib-qunit": "^3.0.1",
     "grunt-contrib-uglify": "^1.0.1",
     "grunt-jsdoc": "^2.2.1",
     "grunt-shell-spawn": "^0.3.10",