diff --git a/types/mock-knex/index.d.ts b/types/mock-knex/index.d.ts
index 8c3f022bc7..8a77dbbb14 100644
--- a/types/mock-knex/index.d.ts
+++ b/types/mock-knex/index.d.ts
@@ -52,6 +52,11 @@ export interface Tracker extends EventEmitter {
         event: "query",
         callback: (query: QueryDetails, step: number) => void
     ): this;
+
+    once(
+        event: "query",
+        callback: (query: QueryDetails, step: number) => void
+    ): this;
 }
 
 /**
@@ -73,7 +78,7 @@ export interface QueryDetails extends Knex.Sql {
      *
      * @param values An array of mock data to be returned by database. For Bookshelf this is mostly array of objects. Knex could return any type of data.
      */
-    response(values: any[], options?: QueryDetailsResponseOption): void;
+    response(values: any, options?: QueryDetailsResponseOption): void;
 }
 
 export interface QueryDetailsResponseOption {