diff --git a/types/pubnub/index.d.ts b/types/pubnub/index.d.ts
index c10cd506b9..4a8b497506 100644
--- a/types/pubnub/index.d.ts
+++ b/types/pubnub/index.d.ts
@@ -4,7 +4,8 @@
 //                  rollymaduk <https://github.com/rollymaduk>,
 //                  vitosamson <https://github.com/vitosamson>,
 //                  FlorianDr <https://github.com/FlorianDr>,
-//                  danduh <https://github.com/danduh>
+//                  danduh <https://github.com/danduh>,
+//                  ChristianBoehlke <https://github.com/ChristianBoehlke>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // @see https://www.pubnub.com/docs/web-javascript/api-reference-configuration
 // TypeScript Version: 2.2
@@ -99,6 +100,15 @@ declare class Pubnub {
     params: Pubnub.SetStateParameters
   ): Promise<Pubnub.SetStateResponse>;
 
+  grant(
+    params: Pubnub.GrantParameters,
+    callback: (status: Pubnub.GrantStatus, response: {}) => void
+  ): void;
+
+  grant(
+    params: Pubnub.GrantParameters
+  ): Promise<{}>;
+
   encrypt(
     data: string,
     customCipherKey?: string,
@@ -348,6 +358,23 @@ declare namespace Pubnub {
     };
   }
 
+  // grant
+  interface GrantParameters {
+    channels?: string[];
+    channelGroups?: string[];
+    authKeys?: string[];
+    ttl?: number;
+    read?: boolean;
+    write?: boolean;
+    manage?: boolean;
+  }
+
+  interface GrantStatus {
+    error: boolean;
+    operation: string;
+    statusCode: number;
+  }
+
   // encrypt & decrypt
   interface CryptoParameters {
     encryptKey?: boolean;
diff --git a/types/pubnub/pubnub-tests.ts b/types/pubnub/pubnub-tests.ts
index 96dd4202ba..8750919e59 100644
--- a/types/pubnub/pubnub-tests.ts
+++ b/types/pubnub/pubnub-tests.ts
@@ -87,6 +87,17 @@ pubnub.setState({ channels: [] }).then(res => {
   console.log(res.state);
 });
 
+const grantOptions = {
+  channels: ['channel-1'],
+  authKeys: ['auth-key'],
+  read: true,
+  write: false,
+  manage: false
+};
+pubnub.grant(grantOptions).then(status => {
+  console.log(status);
+});
+
 pubnub.history({channel: 'channel-1', count: 2}, (status, res) => {
   console.log(status);
   console.log(res);