diff --git a/index.d.ts b/index.d.ts
index ca97b6e..256398f 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -1,6 +1,6 @@
 import {VError} from 'verror';
 
-class GRPCError extends VError {
+export class GRPCError extends VError {
   code: number;
   name: string;
 }
@@ -21,4 +21,4 @@ export class UnimplementedError extends GRPCError {}
 export class InternalError extends GRPCError {}
 export class UnavailableError extends GRPCError {}
 export class DataLossError extends GRPCError {}
-export class UnauthenticatedError extends GRPCError {}
\ No newline at end of file
+export class UnauthenticatedError extends GRPCError {}