diff --git a/package.json b/package.json
index 2b55999..9209fee 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "makara": "^2.0.3"
   },
   "devDependencies": {
-    "chai": "^3.5.0",
+    "chai": "^5.1.1",
     "del": "^2.2.2",
     "grunt": "^0.4.5",
     "grunt-cli": "^0.1.13",