diff --git a/package.json b/package.json
index bc16be6..c45c6c6 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "bip": "^2.0.1"
   },
   "devDependencies": {
-    "chai": "4.3.4",
+    "chai": "4.5.0",
     "codeclimate-test-reporter": "0.5.1",
     "coffee-coverage": "2.0.1",
     "coffee-script": "1.12.7",