diff --git a/package.json b/package.json
index fced206b..76987aa1 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
     "@types/mocha": "~2.2.32",
     "@types/react": "^16.0.19",
     "@types/react-dom": "^16.0.2",
-    "async": "^0.9.0",
+    "async": "^2.6.1",
     "bluebird": "~3.5.3",
     "bootstrap": "^3.3.6",
     "core-js": "^2.5.1",