diff --git a/package.json b/package.json
index 7901d47..e053268 100644
--- a/package.json
+++ b/package.json
@@ -33,11 +33,11 @@
   },
   "devDependencies": {
     "@istanbuljs/nyc-config-typescript": "0.1.3",
-    "@types/chai": "4.1.7",
+    "@types/chai": "4.2.14",
     "@types/chai-as-promised": "7.1.0",
     "@types/mocha": "5.2.7",
     "@types/sinon": "7.0.13",
-    "chai": "4.2.0",
+    "chai": "4.3.0",
     "chai-as-promised": "7.1.1",
     "husky": "3.0.1",
     "inversify": "5.0.1",