diff --git a/types/index.d.ts b/types/index.d.ts
index f2bd2475..52024d53 100644
--- a/types/index.d.ts
+++ b/types/index.d.ts
@@ -658,7 +658,7 @@ export interface Connection extends events.EventEmitter {
   /**
    * Prepare query.
    */
-  prepare(sql: string): Promise<Prepare>;
+  prepare(sql: string | QueryOptions): Promise<Prepare>;
 
   /**
    * Execute query using binary (prepare) protocol