diff --git a/index.d.ts b/index.d.ts
index fd52a3631..d8eaf4b10 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -24,6 +24,7 @@ declare module "eris" {
     maxAge?: number;
     maxUses?: number;
     temporary?: boolean;
+    unique?: boolean;
   }
 
   interface Invitable {