diff --git a/src/adapter.ts b/src/adapter.ts
index 46376fb6..03d54d36 100644
--- a/src/adapter.ts
+++ b/src/adapter.ts
@@ -15,7 +15,7 @@
 import { Adapter, Helper, Model } from 'casbin';
 import { Op } from 'sequelize';
 import { Sequelize, SequelizeOptions } from 'sequelize-typescript';
-import { CasbinRule, updateCasbinRule } from './casbinRule';
+import { createCasbinRule, CasbinRule } from './casbinRule';
 
 export interface SequelizeAdapterOptions extends SequelizeOptions {
   tableName?: string;
@@ -30,6 +30,7 @@ export class SequelizeAdapter implements Adapter {
   private sequelize: Sequelize;
   private filtered = false;
   private autoCreateTable = true;
+  private CasbinRule: typeof CasbinRule;
 
   constructor(option: SequelizeAdapterOptions, autoCreateTable = true) {
     this.option = option;
@@ -60,9 +61,12 @@ export class SequelizeAdapter implements Adapter {
 
   private async open(): Promise<void> {
     this.sequelize = new Sequelize(this.option);
-    updateCasbinRule(this.option.tableName, this.option.schema);
+    this.CasbinRule = createCasbinRule(
+      this.option.tableName,
+      this.option.schema
+    ); // Set the property here
     await this.sequelize.authenticate();
-    this.sequelize.addModels([CasbinRule]);
+    this.sequelize.addModels([this.CasbinRule]);
     if (this.autoCreateTable) {
       await this.createTable();
     }
@@ -90,7 +94,7 @@ export class SequelizeAdapter implements Adapter {
    * loadPolicy loads all policy rules from the storage.
    */
   public async loadPolicy(model: Model): Promise<void> {
-    const lines = await this.sequelize.getRepository(CasbinRule).findAll();
+    const lines = await this.sequelize.getRepository(this.CasbinRule).findAll();
 
     for (const line of lines) {
       this.loadPolicyLine(line, model);
@@ -98,7 +102,7 @@ export class SequelizeAdapter implements Adapter {
   }
 
   private savePolicyLine(ptype: string, rule: string[]): CasbinRule {
-    const line = new CasbinRule();
+    const line = new this.CasbinRule();
 
     line.ptype = ptype;
     if (rule.length > 0) {
@@ -130,7 +134,7 @@ export class SequelizeAdapter implements Adapter {
     await this.sequelize.transaction(async (tx) => {
       // truncate casbin table
       await this.sequelize
-        .getRepository(CasbinRule)
+        .getRepository(this.CasbinRule)
         .destroy({ where: {}, truncate: true, transaction: tx });
 
       const lines: CasbinRule[] = [];
@@ -151,7 +155,7 @@ export class SequelizeAdapter implements Adapter {
         }
       }
 
-      await CasbinRule.bulkCreate(
+      await this.CasbinRule.bulkCreate(
         lines.map((l) => l.get({ plain: true })),
         { transaction: tx }
       );
@@ -185,7 +189,7 @@ export class SequelizeAdapter implements Adapter {
       lines.push(line);
     }
     await this.sequelize.transaction(async (tx) => {
-      await CasbinRule.bulkCreate(
+      await this.CasbinRule.bulkCreate(
         lines.map((l) => l.get({ plain: true })),
         { transaction: tx }
       );
@@ -210,7 +214,7 @@ export class SequelizeAdapter implements Adapter {
         where[key] = line[key];
       });
 
-    await this.sequelize.getRepository(CasbinRule).destroy({ where });
+    await this.sequelize.getRepository(this.CasbinRule).destroy({ where });
   }
 
   /**
@@ -234,7 +238,7 @@ export class SequelizeAdapter implements Adapter {
           });
 
         await this.sequelize
-          .getRepository(CasbinRule)
+          .getRepository(this.CasbinRule)
           .destroy({ where, transaction: tx });
       }
     });
@@ -271,7 +275,7 @@ export class SequelizeAdapter implements Adapter {
     };
 
     const lines = await this.sequelize
-      .getRepository(CasbinRule)
+      .getRepository(this.CasbinRule)
       .findAll({ where });
 
     lines.forEach((line) => this.loadPolicyLine(line, model));
@@ -287,7 +291,7 @@ export class SequelizeAdapter implements Adapter {
     fieldIndex: number,
     ...fieldValues: string[]
   ): Promise<void> {
-    const line = new CasbinRule();
+    const line = new this.CasbinRule();
     line.ptype = ptype;
 
     const idx = fieldIndex + fieldValues.length;
@@ -319,7 +323,7 @@ export class SequelizeAdapter implements Adapter {
         where[key] = line[key];
       });
 
-    await this.sequelize.getRepository(CasbinRule).destroy({
+    await this.sequelize.getRepository(this.CasbinRule).destroy({
       where,
     });
   }
diff --git a/src/casbinRule.ts b/src/casbinRule.ts
index ef49574c..b4180612 100644
--- a/src/casbinRule.ts
+++ b/src/casbinRule.ts
@@ -44,12 +44,16 @@ export class CasbinRule extends Model<CasbinRule> {
   public v5: string;
 }
 
-export function updateCasbinRule(
+export function createCasbinRule(
   tableName = 'casbin_rule',
   schema?: string
-): void {
-  const options = getOptions(CasbinRule.prototype);
+): typeof CasbinRule {
+  class CustomCasbinRule extends CasbinRule {}
+
+  const options = getOptions(CustomCasbinRule.prototype);
   options!.tableName = tableName;
   options!.schema = schema;
-  setOptions(CasbinRule.prototype, options!);
+  setOptions(CustomCasbinRule.prototype, options!);
+
+  return CustomCasbinRule;
 }