diff --git a/package.json b/package.json
index 30e4a73bb..dfd4fd650 100644
--- a/package.json
+++ b/package.json
@@ -15,6 +15,7 @@
   "dependencies": {
     "@grpc/grpc-js": "0.6.9",
     "@grpc/proto-loader": "^0.5.1",
+    "@types/long": "^4.0.0",
     "abort-controller": "^3.0.0",
     "duplexify": "^3.6.0",
     "google-auth-library": "^5.0.0",