diff --git a/package.json b/package.json
index 0d934d01d..bff678323 100644
--- a/package.json
+++ b/package.json
@@ -58,6 +58,7 @@
     "@google-cloud/promisify": "^0.4.0",
     "@sindresorhus/is": "^0.15.0",
     "@types/duplexify": "^3.6.0",
+    "@types/long": "^4.0.0",
     "@types/p-defer": "^1.0.3",
     "arrify": "^1.0.0",
     "async-each": "^1.0.1",
diff --git a/proto/iam.d.ts b/proto/iam.d.ts
index 79818b502..3343cbbb7 100644
--- a/proto/iam.d.ts
+++ b/proto/iam.d.ts
@@ -1,5 +1,5 @@
 import * as $protobuf from "protobufjs";
-import * as long from "long";
+import * as Long from "long";
 /** Namespace google. */
 export namespace google {
 
diff --git a/proto/pubsub.d.ts b/proto/pubsub.d.ts
index fe2ce1632..be2b7bf80 100644
--- a/proto/pubsub.d.ts
+++ b/proto/pubsub.d.ts
@@ -1,5 +1,5 @@
 import * as $protobuf from "protobufjs";
-import * as long from "long";
+import * as Long from "long";
 /** Namespace google. */
 export namespace google {