diff --git a/package.json b/package.json
index aa5713cc..384738e7 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
   "dependencies": {
     "element-class": "^0.2.0",
     "exenv": "1.2.0",
-    "lodash.assign": "^3.2.0"
+    "lodash.assign": "^4.2.0"
   },
   "peerDependencies": {
     "react": "^0.14.0 || ^15.0.0",