diff --git a/typings/index.d.ts b/typings/index.d.ts
index 0e08852..872b8dd 100644
--- a/typings/index.d.ts
+++ b/typings/index.d.ts
@@ -1180,7 +1180,7 @@ export abstract class GuildChannel extends Channel {
   public setName(name: string, reason?: string): Promise<this>;
   public setParent(channel: CategoryChannelResolvable | null, options?: SetParentOptions): Promise<this>;
   public setPosition(position: number, options?: SetChannelPositionOptions): Promise<this>;
-  public isText(): this is TextChannel | NewsChannel;
+  public isText(): this is GuildTextBasedChannel;
 }
 
 export class GuildEmoji extends BaseGuildEmoji {