diff --git a/package.json b/package.json
index 12a352cec..8ffe5a4cd 100644
--- a/package.json
+++ b/package.json
@@ -91,7 +91,7 @@
     "@typescript-eslint/eslint-plugin": "^4.0.0",
     "@typescript-eslint/parser": "^3.10.1",
     "bignumber.js": "^9.0.1",
-    "chai": "^4.2.0",
+    "chai": "^4.3.0",
     "coveralls": "^3.1.0",
     "dotenv": "^8.2.0",
     "eslint": "^7.15.0",
diff --git a/yarn.lock b/yarn.lock
index 5a6b2f59e..858f03226 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2454,10 +2454,10 @@ cbor@^5.1.0:
     bignumber.js "^9.0.0"
     nofilter "^1.0.4"
 
-chai@^4.2.0:
-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/chai/-/chai-4.2.0.tgz#760aa72cf20e3795e84b12877ce0e83737aa29e5"
-  integrity sha512-XQU3bhBukrOsQCuwZndwGcCVQHyZi53fQ6Ys1Fym7E4olpIqqZZhhoFJoaKVvV17lWQoXYwgWN2nF5crA8J2jw==
+chai@^4.3.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/chai/-/chai-4.3.0.tgz#5523a5faf7f819c8a92480d70a8cccbadacfc25f"
+  integrity sha512-/BFd2J30EcOwmdOgXvVsmM48l0Br0nmZPlO0uOW4XKh6kpsUumRXBgPV+IlaqFaqr9cYbeoZAM1Npx0i4A+aiA==
   dependencies:
     assertion-error "^1.1.0"
     check-error "^1.0.2"