diff --git a/web/package.json b/web/package.json
index 150d5d1d2..e2fda536f 100644
--- a/web/package.json
+++ b/web/package.json
@@ -41,6 +41,7 @@
     "@types/lowdb": "^1.0.9",
     "@types/mocha": "^5.2.7",
     "@types/node": "14.0.27",
+    "@types/ws": "^8.5.3",
     "@typescript-eslint/eslint-plugin": "^3.8.0",
     "@typescript-eslint/parser": "^3.8.0",
     "@vue/cli-plugin-babel": "^3.12.1",
diff --git a/web/yarn.lock b/web/yarn.lock
index d5db33dc8..bdab0ba22 100644
--- a/web/yarn.lock
+++ b/web/yarn.lock
@@ -948,6 +948,13 @@
   resolved "https://registry.yarnpkg.com/@types/webpack-env/-/webpack-env-1.17.0.tgz#f99ce359f1bfd87da90cc4a57cab0a18f34a48d0"
   integrity sha512-eHSaNYEyxRA5IAG0Ym/yCyf86niZUIF/TpWKofQI/CVfh5HsMEUyfE2kwFxha4ow0s5g0LfISQxpDKjbRDrizw==
 
+"@types/ws@^8.5.3":
+  version "8.5.3"
+  resolved "https://registry.yarnpkg.com/@types/ws/-/ws-8.5.3.tgz#7d25a1ffbecd3c4f2d35068d0b283c037003274d"
+  integrity sha512-6YOoWjruKj1uLf3INHH7D3qTXwFfEsg1kf3c0uDdSBJwfa/llkwIjrAGV7j7mVgGNbzTQ3HiHKKDXl6bJPD97w==
+  dependencies:
+    "@types/node" "*"
+
 "@typescript-eslint/eslint-plugin@^3.8.0":
   version "3.10.1"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-3.10.1.tgz#7e061338a1383f59edc204c605899f93dc2e2c8f"