diff --git a/package.json b/package.json
index fa0567c991..90bd14280c 100644
--- a/package.json
+++ b/package.json
@@ -94,6 +94,7 @@
   "devDependencies": {
     "@types/chai": "^4.1.2",
     "@types/lodash": "^4.14.106",
+    "@types/mocha": "^5.0.0",
     "@types/qs": "^6.5.1",
     "@types/react": "^16.3.1",
     "@types/react-dom": "^16.0.4",
diff --git a/yarn.lock b/yarn.lock
index 40be0bbc45..fa589545c1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -44,6 +44,10 @@
   version "4.14.106"
   resolved "https://registry.yarnpkg.com/@types/lodash/-/lodash-4.14.106.tgz#6093e9a02aa567ddecfe9afadca89e53e5dce4dd"
 
+"@types/mocha@^5.0.0":
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/@types/mocha/-/mocha-5.0.0.tgz#a3014921991066193f6c8e47290d4d598dfd19e6"
+
 "@types/node@*":
   version "9.6.1"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-9.6.1.tgz#e2d374ef15b315b48e7efc308fa1a7cd51faa06c"