diff --git a/test/NodeDriver.ts b/test/NodeDriver.ts
index a96cb8c..8baf3dc 100644
--- a/test/NodeDriver.ts
+++ b/test/NodeDriver.ts
@@ -1,12 +1,15 @@
-import { ethers } from 'hardhat';
+import { ethers, upgrades } from 'hardhat';
 import { expect } from 'chai';
 import { loadFixture } from '@nomicfoundation/hardhat-network-helpers';
-import { IEVMWriter, NetworkInitializer, NodeDriver, NodeDriverAuth, UnitTestSFC } from '../typechain-types';
+import { IEVMWriter, NetworkInitializer, NodeDriver, NodeDriverAuth } from '../typechain-types';
 
 describe('NodeDriver', () => {
   const fixture = async () => {
     const [owner, nonOwner] = await ethers.getSigners();
-    const sfc: UnitTestSFC = await ethers.deployContract('UnitTestSFC');
+    const sfc = await upgrades.deployProxy(await ethers.getContractFactory('UnitTestSFC'), {
+      kind: 'uups',
+      initializer: false,
+    });
     const nodeDriver: NodeDriver = await ethers.deployContract('NodeDriver');
     const evmWriter: IEVMWriter = await ethers.deployContract('StubEvmWriter');
     const nodeDriverAuth: NodeDriverAuth = await ethers.deployContract('NodeDriverAuth');
diff --git a/test/SFC.ts b/test/SFC.ts
index 07c9570..53f9fbd 100644
--- a/test/SFC.ts
+++ b/test/SFC.ts
@@ -1,11 +1,10 @@
-import { ethers } from 'hardhat';
+import { ethers, upgrades } from 'hardhat';
 import { expect } from 'chai';
 import { loadFixture } from '@nomicfoundation/hardhat-network-helpers';
 import {
   IEVMWriter,
   NodeDriver,
   NodeDriverAuth,
-  UnitTestSFC,
   UnitTestConstantsManager,
   UnitTestNetworkInitializer,
 } from '../typechain-types';
@@ -15,7 +14,10 @@ import { BlockchainNode, ValidatorMetrics } from './helpers/BlockchainNode';
 describe('SFC', () => {
   const fixture = async () => {
     const [owner, user] = await ethers.getSigners();
-    const sfc: UnitTestSFC = await ethers.deployContract('UnitTestSFC');
+    const sfc = await upgrades.deployProxy(await ethers.getContractFactory('UnitTestSFC'), {
+      kind: 'uups',
+      initializer: false,
+    });
     const nodeDriver: NodeDriver = await ethers.deployContract('NodeDriver');
     const evmWriter: IEVMWriter = await ethers.deployContract('StubEvmWriter');
     const nodeDriverAuth: NodeDriverAuth = await ethers.deployContract('NodeDriverAuth');
@@ -241,11 +243,6 @@ describe('SFC', () => {
       expect(await this.sfc.owner()).to.equal(this.owner);
     });
 
-    it('Should succeed and return true if the caller is the owner of the contract', async function () {
-      expect(await this.sfc.isOwner()).to.equal(true);
-      expect(await this.sfc.connect(this.user).isOwner()).to.equal(false);
-    });
-
     it('Should succeed and return address(0) if owner leaves the contract without owner', async function () {
       expect(await this.sfc.owner()).to.equal(this.owner);
       await this.sfc.renounceOwnership();