diff --git a/package.json b/package.json
index 6d4b993..775cffb 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "@types/mocha": "8.2.2",
     "chai": "4.3.4",
     "lint-staged": "10.5.4",
-    "mocha": "8.3.2",
+    "mocha": "8.4.0",
     "post-commit": "0.0.1",
     "pre-commit": "1.2.2",
     "prettier": "2.2.1",
diff --git a/yarn.lock b/yarn.lock
index f6f1434..0373e40 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -804,10 +804,10 @@ mkdirp@^0.5.1:
   dependencies:
     minimist "^1.2.5"
 
-mocha@8.3.2:
-  version "8.3.2"
-  resolved "https://registry.yarnpkg.com/mocha/-/mocha-8.3.2.tgz#53406f195fa86fbdebe71f8b1c6fb23221d69fcc"
-  integrity sha512-UdmISwr/5w+uXLPKspgoV7/RXZwKRTiTjJ2/AC5ZiEztIoOYdfKb19+9jNmEInzx5pBsCyJQzarAxqIGBNYJhg==
+mocha@8.4.0:
+  version "8.4.0"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-8.4.0.tgz#677be88bf15980a3cae03a73e10a0fc3997f0cff"
+  integrity sha512-hJaO0mwDXmZS4ghXsvPVriOhsxQ7ofcpQdm8dE+jISUOKopitvnXFQmpRR7jd2K6VBG6E26gU3IAbXXGIbu4sQ==
   dependencies:
     "@ungap/promise-all-settled" "1.1.2"
     ansi-colors "4.1.1"