diff --git a/types/nodemailer-mailgun-transport/index.d.ts b/types/nodemailer-mailgun-transport/index.d.ts
index 5e63a200e1..6db1e42742 100644
--- a/types/nodemailer-mailgun-transport/index.d.ts
+++ b/types/nodemailer-mailgun-transport/index.d.ts
@@ -1,6 +1,7 @@
-// Type definitions for nodemailer-mailgun-transport 1.3
+// Type definitions for nodemailer-mailgun-transport 1.4
 // Project: https://github.com/orliesaurus/nodemailer-mailgun-transport, http://mailgun.com
 // Definitions by: Oto Ciulis <https://github.com/otociulis>
+//                 Joachim Wallsin <https://github.com/calvinmcgee>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.3
 
@@ -16,6 +17,10 @@ declare namespace mailgunTransport {
 
     interface Options {
         auth: AuthOptions;
+        proxy?: string | boolean;
+        host?: string;
+        protocol?: string;
+        port?: number;
     }
 
     type MailOptions = Mail.Options;
diff --git a/types/nodemailer-mailgun-transport/nodemailer-mailgun-transport-tests.ts b/types/nodemailer-mailgun-transport/nodemailer-mailgun-transport-tests.ts
index 0980f43cbd..b1f169f56d 100644
--- a/types/nodemailer-mailgun-transport/nodemailer-mailgun-transport-tests.ts
+++ b/types/nodemailer-mailgun-transport/nodemailer-mailgun-transport-tests.ts
@@ -14,7 +14,15 @@ const optsWithDomain: mailgunTransport.Options = {
     }
 };
 
-const transport: nodemailer.Transporter = nodemailer.createTransport(mailgunTransport(optsWithDomain));
+const optsWithHost: mailgunTransport.Options = {
+    auth: {
+        api_key: "harry",
+        domain: "http://www.foo.com"
+    },
+    host: 'api.eu.mailgun.net'
+};
+
+const transport: nodemailer.Transporter = nodemailer.createTransport(mailgunTransport(optsWithHost));
 
 // setup e-mail data with unicode symbols
 const mailOptions: nodemailer.SendMailOptions = {