diff --git a/package-lock.json b/package-lock.json
index 2a3450e..0f04f66 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -325,9 +325,9 @@
       "dev": true
     },
     "@types/chai": {
-      "version": "4.2.11",
-      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.2.11.tgz",
-      "integrity": "sha512-t7uW6eFafjO+qJ3BIV2gGUyZs27egcNRkUdalkud+Qa3+kg//f129iuOFivHDXQ+vnU3fDXuwgv0cqMCbcE8sw==",
+      "version": "4.2.21",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.2.21.tgz",
+      "integrity": "sha512-yd+9qKmJxm496BOV9CMNaey8TWsikaZOwMRwPHQIjcOJM9oV+fi9ZMNw3JsVnbEEbo2gRTDnGEBv8pjyn67hNg==",
       "dev": true
     },
     "@types/color-name": {