diff --git a/types/intercom-web/index.d.ts b/types/intercom-web/index.d.ts
index eb2157d7c7..4348094541 100755
--- a/types/intercom-web/index.d.ts
+++ b/types/intercom-web/index.d.ts
@@ -43,7 +43,8 @@ declare namespace Intercom_ {
     | 'onShow'
     | 'onUnreadCountChange'
     | 'onActivatorClick'
-    | 'trackEvent';
+    | 'trackEvent'
+    | 'getVisitorId';
 
   interface IntercomStatic {
     (command: 'boot', param: IntercomSettings): void;
@@ -53,6 +54,7 @@ declare namespace Intercom_ {
     (command: 'onHide' | 'onShow' | 'onActivatorClick', param?: () => void): void;
     (command: 'trackEvent', tag?: string, metadata?: any): void;
     (command: 'onUnreadCountChange', cb: (unreadCount: number) => void): void;
+    (command: 'getVisitorId'): string;
     (command: IntercomCommand, param1?: any, param2?: any): void;
   }
 }
diff --git a/types/intercom-web/intercom-web-tests.ts b/types/intercom-web/intercom-web-tests.ts
index 425aa74be4..325ecb7f4a 100755
--- a/types/intercom-web/intercom-web-tests.ts
+++ b/types/intercom-web/intercom-web-tests.ts
@@ -26,6 +26,7 @@ Intercom('onHide', () => { /* Do stuff */ });
 Intercom('onUnreadCountChange', (unreadCount: number) => { /* Do stuff */ });
 Intercom('onActivatorClick', () => { /* Do stuff */ });
 Intercom('trackEvent', 'invited-friend');
+const visitorId = Intercom('getVisitorId');
 
 const metadata = {
   invitee_email: 'pi@example.org',