diff --git a/types/http-graceful-shutdown/http-graceful-shutdown-tests.ts b/types/http-graceful-shutdown/http-graceful-shutdown-tests.ts
index 17bc81ce1d..2445635c67 100644
--- a/types/http-graceful-shutdown/http-graceful-shutdown-tests.ts
+++ b/types/http-graceful-shutdown/http-graceful-shutdown-tests.ts
@@ -1,5 +1,6 @@
 import GracefulShutdown = require('http-graceful-shutdown');
 import * as http from "http";
+import * as https from "https";
 
 const opts: GracefulShutdown.Options = {
     signals: "SIGINT SIGTERM",
@@ -14,8 +15,16 @@ const opts: GracefulShutdown.Options = {
     }
 };
 
-const server = http.createServer((req, res) => {
+const httpServer = http.createServer((req, res) => {
     res.end();
 });
 
-GracefulShutdown(server, opts);
+const httpsServer = https.createServer({
+    key: new Buffer('foo'),
+    cert: new Buffer('bar')
+}, (req, res) => {
+    res.end();
+});
+
+GracefulShutdown(httpServer, opts);
+GracefulShutdown(httpsServer, opts);
diff --git a/types/http-graceful-shutdown/index.d.ts b/types/http-graceful-shutdown/index.d.ts
index f8269adea7..ba34246290 100644
--- a/types/http-graceful-shutdown/index.d.ts
+++ b/types/http-graceful-shutdown/index.d.ts
@@ -5,9 +5,10 @@
 
 /// <reference types="node" />
 
-import { Server } from "http";
+import { Server as HttpServer } from "http";
+import { Server as HttpsServer } from "https";
 
-declare function GracefulShutdown(server: Server, options?: GracefulShutdown.Options): void;
+declare function GracefulShutdown(server: HttpServer | HttpsServer, options?: GracefulShutdown.Options): void;
 
 declare namespace GracefulShutdown {
     interface Options {