diff --git a/__tests__/account.test.ts b/__tests__/account.test.ts
index d29c9fc7e..c633ecebc 100644
--- a/__tests__/account.test.ts
+++ b/__tests__/account.test.ts
@@ -391,23 +391,6 @@ describe('deploy and test Account', () => {
   });
 
   describe('fastExecute()', () => {
-    test('Only Rpc X', async () => {
-      const provider08 = new RpcProvider({
-        nodeUrl: 'dummy',
-        blockIdentifier: BlockTag.PRE_CONFIRMED,
-        specVersion: '0.10.0',
-      });
-      const testAccount = new Account({
-        provider: provider08,
-        address: '0x123',
-        signer: '0x456',
-      });
-      const myCall: Call = { contractAddress: '0x036', entrypoint: 'withdraw', calldata: [] };
-      await expect(testAccount.fastExecute(myCall)).rejects.toThrow(
-        'Wrong Rpc version in Provider. At least Rpc v0.9 required.'
-      );
-    });
-
     test('Only provider with PRE_CONFIRMED blockIdentifier', async () => {
       const providerLatest = new RpcProvider({
         nodeUrl: 'dummy',
diff --git a/src/account/default.ts b/src/account/default.ts
index 08530a582..300a0069c 100644
--- a/src/account/default.ts
+++ b/src/account/default.ts
@@ -90,7 +90,6 @@ import { assertPaymasterTransactionSafety } from '../utils/paymaster';
 import assert from '../utils/assert';
 import { defaultDeployer, Deployer } from '../deployer';
 import type { TipType } from '../provider/modules/tip';
-import { RPC09 } from '../channel';
 
 export class Account extends Provider implements AccountInterface {
   public signer: SignerInterface;
@@ -365,10 +364,6 @@ export class Account extends Provider implements AccountInterface {
     transactionsDetail: UniversalDetails = {},
     waitDetail: fastWaitForTransactionOptions = {}
   ): Promise<fastExecuteResponse> {
-    assert(
-      this.channel instanceof RPC09.RpcChannel,
-      'Wrong Rpc version in Provider. At least Rpc v0.9 required.'
-    );
     assert(
       this.channel.blockIdentifier === BlockTag.PRE_CONFIRMED,
       'Provider needs to be initialized with `pre_confirmed` blockIdentifier option.'
diff --git a/src/provider/rpc.ts b/src/provider/rpc.ts
index 3c7c88b50..279458026 100644
--- a/src/provider/rpc.ts
+++ b/src/provider/rpc.ts
@@ -344,16 +344,13 @@ export class RpcProvider implements ProviderInterface {
     initNonce: BigNumberish,
     options?: fastWaitForTransactionOptions
   ): Promise<boolean> {
-    if (this.channel instanceof RPC09.RpcChannel) {
-      const isSuccess = await this.channel.fastWaitForTransaction(
-        txHash,
-        address,
-        initNonce,
-        options
-      );
-      return isSuccess;
-    }
-    throw new Error('Unsupported channel type');
+    const isSuccess = await this.channel.fastWaitForTransaction(
+      txHash,
+      address,
+      initNonce,
+      options
+    );
+    return isSuccess;
   }
 
   public async getStorageAt(