diff --git a/package.json b/package.json
index 934887e4..f5ae2303 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
     "@mike-north/js-lib-semantic-release-config": "1.0.1",
     "@types/aws-lambda": "8.10.31",
     "@types/aws-sdk": "2.7.0",
-    "@types/chai": "4.1.7",
+    "@types/chai": "4.2.2",
     "@types/mocha": "5.2.7",
     "@types/node": "9.6.51",
     "chai": "4.2.0",
diff --git a/yarn.lock b/yarn.lock
index ec7c6e7a..1125ba9d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1325,10 +1325,10 @@
   dependencies:
     aws-sdk "*"
 
-"@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@4.2.2":
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.2.2.tgz#6b825013863d04868c15624ec8b7fdced88a47c6"
+  integrity sha512-8V2aCcPM3WLuJvJpF6N60uUvdZb7NHjpjQlLk1QmZbTP4XZET/FX0c3TJ3K7qt4L98FS1Pifa8BVofTVuJFWVA==
 
 "@types/events@*":
   version "3.0.0"