diff --git a/package.json b/package.json
index d34014c0d8..577c28b53e 100644
--- a/package.json
+++ b/package.json
@@ -54,6 +54,7 @@
     "jspath": "^0.4.0",
     "mocha": "^3.5.3",
     "multimatch": "^2.1.0",
+    "pako": "^2.1.0",
     "react-virtualized": "^9.22.4",
     "sass": "^1.28.0",
     "sinon": "^7.3.2",