diff --git a/src/client.ts b/src/client.ts
index 0f66402..21374c5 100644
--- a/src/client.ts
+++ b/src/client.ts
@@ -1,6 +1,7 @@
 import { DiscordIPC, PacketIPCEvent } from "./conn.ts";
 import type {
   Activity,
+  ActivityType,
   ApplicationPayload,
   AuthenticateResponsePayload,
   ChannelPayload,
@@ -95,7 +96,7 @@ export class Client {
    */
   setActivity(activity?: Activity) {
     return this.ipc!.sendCommand<
-      Activity & { application_id: string; type: number }
+      Activity & { application_id: string; type: ActivityType }
     >(
       "SET_ACTIVITY",
       {
diff --git a/src/types.ts b/src/types.ts
index 77e7c64..2d99d96 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,6 +1,7 @@
 // deno-lint-ignore-file camelcase
 
 export interface Activity {
+  type?: ActivityType;
   details?: string;
   state?: string;
   assets?: {
@@ -28,6 +29,15 @@ export interface Activity {
   }[];
 }
 
+export enum ActivityType {
+  PLAYING,
+  STREAMING,
+  LISTENING,
+  WATCHING,
+  CUSTOM,
+  COMPETING,
+}
+
 export enum OpCode {
   HANDSHAKE,
   FRAME,