diff --git a/package-lock.json b/package-lock.json
index e0da975e..5de34740 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -657,9 +657,9 @@
       "dev": true
     },
     "@types/chai": {
-      "version": "3.5.2",
-      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-3.5.2.tgz",
-      "integrity": "sha1-wRzSgX06QBt7oPWkIPNcVhObHB4=",
+      "version": "4.2.14",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.2.14.tgz",
+      "integrity": "sha512-G+ITQPXkwTrslfG5L/BksmbLUA0M1iybEsmCWPqzSxsRRhJZimBKJkoMi8fr/CPygPTj4zO5pJH7I2/cm9M7SQ==",
       "dev": true
     },
     "@types/fs-extra": {
diff --git a/package.json b/package.json
index 0f3619b0..68da7405 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
   "devDependencies": {
     "@salesforce-ux/design-system": "^2.13.7",
     "@types/bluebird": "^3.0.37",
-    "@types/chai": "^3.4.34",
+    "@types/chai": "^4.2.14",
     "@types/fs-extra": "0.0.32",
     "@types/glob": "^7.1.3",
     "@types/graphql": "^0.8.6",