diff --git a/types/better-sqlite3/index.d.ts b/types/better-sqlite3/index.d.ts
index 98de770ccf..530f5c3e53 100644
--- a/types/better-sqlite3/index.d.ts
+++ b/types/better-sqlite3/index.d.ts
@@ -1,6 +1,7 @@
 // Type definitions for better-sqlite3 3.1
 // Project: http://github.com/JoshuaWise/better-sqlite3
 // Definitions by: Ben Davies <https://github.com/Morfent>
+//                 Mathew Rumsey <https://github.com/matrumz>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 /// <reference types="node" />
@@ -42,6 +43,7 @@ declare class Transaction {
 interface DatabaseOptions {
 	memory?: boolean;
 	readonly?: boolean;
+	fileMustExist?: boolean;
 }
 
 interface RegistrationOptions {