diff --git a/package-lock.json b/package-lock.json
index 70b6e2ac2a..05ac5b4203 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,6 +11,7 @@
       "dependencies": {
         "@types/bonjour": "^3.5.9",
         "@types/connect-history-api-fallback": "^1.3.5",
+        "@types/express": "^4.17.13",
         "@types/serve-index": "^1.9.1",
         "@types/sockjs": "^0.3.33",
         "@types/ws": "^8.2.2",
diff --git a/package.json b/package.json
index a72c72c445..d47336c218 100644
--- a/package.json
+++ b/package.json
@@ -37,6 +37,7 @@
   "dependencies": {
     "@types/bonjour": "^3.5.9",
     "@types/connect-history-api-fallback": "^1.3.5",
+    "@types/express": "^4.17.13",
     "@types/serve-index": "^1.9.1",
     "@types/sockjs": "^0.3.33",
     "@types/ws": "^8.2.2",