diff --git a/package.json b/package.json
index a24c67b..53b7a72 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,7 @@
     "yargs": "^12.0.2"
   },
   "devDependencies": {
-    "chai": "4.2.0",
+    "chai": "4.5.0",
     "chai-as-promised": "7.1.1",
     "codecov": "3.1.0",
     "documentation": "9.0.0-alpha.1",