diff --git a/package.json b/package.json
index f5b9716e..b73a5a20 100644
--- a/package.json
+++ b/package.json
@@ -69,6 +69,7 @@
     "html-webpack-plugin": "3.2.0",
     "jest": "^22.2.2",
     "jest-canvas-mock": "^2.2.0",
+    "json": "^9.0.6",
     "lodash.defaultsdeep": "4.6.1",
     "mkdirp": "^1.0.3",
     "postcss-import": "^12.0.0",