diff --git a/package.json b/package.json
index 1c99295b..d95d6ac7 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
     "@oclif/plugin-help": "^5.2.20",
     "@oclif/prettier-config": "^0.2.1",
     "@oclif/test": "^3.0.2",
-    "@types/chai": "^4.3.8",
+    "@types/chai": "^4.3.9",
     "@types/lodash.pickby": "^4.6.7",
     "@types/lodash.sortby": "^4.7.8",
     "@types/lodash.template": "^4.5.2",
diff --git a/yarn.lock b/yarn.lock
index c495db62..876b231d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1047,10 +1047,10 @@
     "@types/node" "*"
     "@types/responselike" "^1.0.0"
 
-"@types/chai@*", "@types/chai@^4.3.8":
-  version "4.3.8"
-  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.3.8.tgz#aa200a264a3bc78ccfc1718eedbd3b9d5a591270"
-  integrity sha512-yW/qTM4mRBBcsA9Xw9FbcImYtFPY7sgr+G/O5RDYVmxiy9a+pE5FyoFUi8JYCZY5nicj8atrr1pcfPiYpeNGOA==
+"@types/chai@*", "@types/chai@^4.3.9":
+  version "4.3.9"
+  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.3.9.tgz#144d762491967db8c6dea38e03d2206c2623feec"
+  integrity sha512-69TtiDzu0bcmKQv3yg1Zx409/Kd7r0b5F1PfpYJfSHzLGtB53547V4u+9iqKYsTu/O2ai6KTb0TInNpvuQ3qmg==
 
 "@types/cli-progress@^3.11.0":
   version "3.11.0"