diff --git a/yarn.lock b/yarn.lock
index 7d408c5..6272426 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1205,9 +1205,9 @@
     picomatch "^2.2.2"
 
 "@types/chai@^4.1.7":
-  version "4.2.20"
-  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.2.20.tgz#bb02e7d02b6c452f6bbb8fe575b56e180644de67"
-  integrity sha512-E121rHk/4BlcEwANZOwcHl8L/Sl0zyIFXJoyggXkl7FCT/4MTf5u25f+qiphe0V5ELaFIkCptgvbf4whCJUVMA==
+  version "4.2.21"
+  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.2.21.tgz#9f35a5643129df132cf3b5c1ec64046ea1af0650"
+  integrity sha512-yd+9qKmJxm496BOV9CMNaey8TWsikaZOwMRwPHQIjcOJM9oV+fi9ZMNw3JsVnbEEbo2gRTDnGEBv8pjyn67hNg==
 
 "@types/color-name@^1.1.1":
   version "1.1.1"