diff --git a/package.json b/package.json
index a5b8cd1873..b900ccd8e1 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
   "readmeFilename": "README.md",
   "dependencies": {
     "tv4": "~1.1.x",
-    "chai": "1.9.x"
+    "chai": "4.3.x"
   },
   "devDependencies": {
     "glob": "^4.0.5",