diff --git a/src/types.ts b/src/types.ts
index 51bbb51..1be1dd7 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,7 +1,7 @@
 export interface ResolverOptions {
   type: any;
   customType?: string;
-  options: any;
+  options?: any;
 }
 
 export interface DNSResult {