diff --git a/package.json b/package.json
index d882abe..2903137 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
     "babel-loader": "^6.2.0",
     "babel-preset-es2015": "^6.1.18",
     "babel-preset-react": "^6.1.18",
-    "chai": "^3.5.0",
+    "chai": "4.3.4",
     "chai-jquery": "^2.0.0",
     "jquery": "^2.2.1",
     "jsdom": "^8.1.0",