diff --git a/package.json b/package.json
index 06830b6..5327b2c 100644
--- a/package.json
+++ b/package.json
@@ -67,6 +67,7 @@
     "jsdom-global": "2.1.1",
     "mocha": "3.2.0",
     "npm-run-all": "3.1.2",
+    "prop-types" : "15.6.0",
     "react": "15.4.1",
     "react-addons-test-utils": "15.4.1",
     "react-dom": "15.4.1",
diff --git a/src/Hex.js b/src/Hex.js
index 1ad53eb..874f589 100644
--- a/src/Hex.js
+++ b/src/Hex.js
@@ -1,4 +1,5 @@
-import React, { PropTypes } from 'react';
+import React from 'react';
+import PropTypes from 'prop-types';
 import { corners } from './utils';
 
 const Hex = (props) => {