diff --git a/src/config.ts b/src/config.ts
index 0c2cea5..4f73fd1 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -106,6 +106,7 @@ export function getConnectionOptions(): ConnectionOptions {
     connectTimeout: 60000,
     trace: false,
     supportBigNumbers: true,
+    jsonStrings: true,
     ...options,
     typeCast,
     namedPlaceholders: false, // we use our own named-placeholders patch, disable mysql2s
diff --git a/src/database/connection.ts b/src/database/connection.ts
index 92c8380..5233569 100644
--- a/src/database/connection.ts
+++ b/src/database/connection.ts
@@ -38,7 +38,7 @@ export class MySql {
     const [result] = await this.connection.execute({
       sql: query,
       values: values,
-      typeCast: typeCastExecute as TypeCast,
+      typeCast: typeCastExecute,
     });
     return result;
   }
diff --git a/src/utils/typeCast.ts b/src/utils/typeCast.ts
index 9ad8fa9..456ecfe 100644
--- a/src/utils/typeCast.ts
+++ b/src/utils/typeCast.ts
@@ -2,21 +2,17 @@ import type { TypeCastField, TypeCastNext } from 'mysql2/promise';
 
 const BINARY_CHARSET = 63;
 
-interface Field extends TypeCastField {
-  charset: number;
-}
-
 /**
  * node-mysql2 v3.9.0 introduced (breaking) typecasting for execute methods.
  */
-export function typeCastExecute(field: Field, next: TypeCastNext) {
+export function typeCastExecute(field: TypeCastField, next: TypeCastNext) {
   return next();
 }
 
 /**
  * mysql-async compatible typecasting.
  */
-export function typeCast(field: Field, next: TypeCastNext) {
+export function typeCast(field: TypeCastField, next: TypeCastNext) {
   switch (field.type) {
     case 'DATETIME':
     case 'DATETIME2':