diff --git a/package.json b/package.json
index 2f304c43..4e430b21 100644
--- a/package.json
+++ b/package.json
@@ -43,6 +43,7 @@
     "babel-plugin-external-helpers": "^6.22.0",
     "babel-plugin-transform-regenerator": "^6.24.1",
     "babel-plugin-transform-runtime": "^6.23.0",
+    "chance": "^1.0.9",
     "concurrently": "^3.4.0",
     "rollup-plugin-babel": "^2.7.1",
     "rollup-plugin-commonjs": "^8.0.2",