diff --git a/package.json b/package.json
index dca9ada..32b06fb 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
   "license": "MIT",
   "devDependencies": {
     "@types/bunyan": "1.8.6",
-    "@types/chai": "4.1.7",
+    "@types/chai": "4.2.0",
     "@types/deep-diff": "1.0.0",
     "@types/js-yaml": "3.12.1",
     "@types/lodash": "4.14.137",
diff --git a/yarn.lock b/yarn.lock
index 8c37cc7..c39306b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -54,10 +54,10 @@
   dependencies:
     "@types/node" "*"
 
-"@types/chai@4.1.7":
-  version "4.1.7"
-  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.1.7.tgz#1b8e33b61a8c09cbe1f85133071baa0dbf9fa71a"
-  integrity sha512-2Y8uPt0/jwjhQ6EiluT0XCri1Dbplr0ZxfFXUz+ye13gaqE8u5gL5ppao1JrUYr9cIip5S6MvQzBS7Kke7U9VA==
+"@types/chai@4.2.0":
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.2.0.tgz#2478260021408dec32c123a7cad3414beb811a07"
+  integrity sha512-zw8UvoBEImn392tLjxoavuonblX/4Yb9ha4KBU10FirCfwgzhKO0dvyJSF9ByxV1xK1r2AgnAi/tvQaLgxQqxA==
 
 "@types/deep-diff@1.0.0":
   version "1.0.0"