diff --git a/npm/webpack-dev-server/tsconfig.json b/npm/webpack-dev-server/tsconfig.json
index 23b4d306e388..bcc0024b9ead 100644
--- a/npm/webpack-dev-server/tsconfig.json
+++ b/npm/webpack-dev-server/tsconfig.json
@@ -47,7 +47,8 @@
     "esModuleInterop": true,
     "skipLibCheck": true,
     /** Allows us to strip internal types sourced from webpack */
-    "stripInternal": true
+    "stripInternal": true,
+    "importsNotUsedAsValues": "error"
   },
   "include": ["src"],
   "exclude": ["node_modules", "*.js"]
diff --git a/system-tests/__snapshots__/webpack_dev_server_fresh_spec.ts.js b/system-tests/__snapshots__/webpack_dev_server_fresh_spec.ts.js
index 5426c4bfd365..dd16daebc467 100644
--- a/system-tests/__snapshots__/webpack_dev_server_fresh_spec.ts.js
+++ b/system-tests/__snapshots__/webpack_dev_server_fresh_spec.ts.js
@@ -2407,6 +2407,8 @@ Your configFile threw an error from: cypress-webpack.config.ts
 
 We stopped running your tests because your config file crashed.
 
-CypressWebpackDevServerError: Incompatible major versions of webpack and webpack-dev-server! webpack-dev-server major version 5 only works with major versions of webpack 4 - saw webpack-dev-server version 5.0.4. If using webpack major version 4, please install webpack-dev-server version 4 to be used with @cypress/webpack-dev-server or upgrade to webpack 5.
+CypressWebpackDevServerError: Incompatible major versions of webpack and webpack-dev-server!
+      webpack-dev-server major version 5 only works with major versions of webpack 4 - saw webpack-dev-server version 5.0.4.
+      If using webpack major version 4, please install webpack-dev-server version 4 to be used with @cypress/webpack-dev-server or upgrade to webpack 5.
       [stack trace lines]
 `