diff --git a/package.json b/package.json
index decd0c3f..5231fb3f 100644
--- a/package.json
+++ b/package.json
@@ -51,13 +51,13 @@
   "author": "Ben Coe <ben@npmjs.com>",
   "license": "ISC",
   "devDependencies": {
-    "@types/chai": "^4.2.11",
+    "@types/chai": "^5.0.0",
     "@types/mocha": "^9.0.0",
     "@types/node": "^16.11.4",
     "@typescript-eslint/eslint-plugin": "^3.10.1",
     "@typescript-eslint/parser": "^3.10.1",
     "c8": "^7.3.0",
-    "chai": "^4.2.0",
+    "chai": "^5.0.0",
     "cross-env": "^7.0.2",
     "eslint": "^7.0.0",
     "eslint-plugin-import": "^2.20.1",