diff --git a/package.json b/package.json
index 65f2ecf..cc6c01e 100644
--- a/package.json
+++ b/package.json
@@ -54,7 +54,7 @@
     "babel-preset-es2015": "^6.14.0",
     "babel-register": "^6.14.0",
     "chai": "^3.5.0",
-    "chai-as-promised": "^5.3.0",
+    "chai-as-promised": "^6.0.0",
     "del": "^2.2.2",
     "gulp": "^3.9.1",
     "gulp-babel": "^6.1.2",