diff --git a/package.json b/package.json
index 532545f..dd3781c 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
   },
   "devDependencies": {
     "@types/benchmark": "1.0.33",
-    "@types/chai": "4.2.12",
+    "@types/chai": "4.2.21",
     "@types/mocha": "8.0.1",
     "@types/node": "14.0.27",
     "benchmark": "2.1.4",