diff --git a/contracts/0.8.9/SepoliaDepositAdapter.sol b/contracts/0.8.9/SepoliaDepositAdapter.sol
deleted file mode 100644
index 48e5fa863..000000000
--- a/contracts/0.8.9/SepoliaDepositAdapter.sol
+++ /dev/null
@@ -1,104 +0,0 @@
-// SPDX-FileCopyrightText: 2024 Lido <info@lido.fi>
-// SPDX-License-Identifier: GPL-3.0
-
-/* See contracts/COMPILERS.md */
-pragma solidity 0.8.9;
-
-import "@openzeppelin/contracts-v4.4/token/ERC20/IERC20.sol";
-import "@openzeppelin/contracts-v4.4/access/Ownable.sol";
-
-interface IDepositContract {
-    event DepositEvent(
-        bytes pubkey,
-        bytes withdrawal_credentials,
-        bytes amount,
-        bytes signature,
-        bytes index
-    );
-
-    function deposit(
-        bytes calldata pubkey,
-        bytes calldata withdrawal_credentials,
-        bytes calldata signature,
-        bytes32 deposit_data_root
-    ) external payable;
-
-    function get_deposit_root() external view returns (bytes32);
-
-    function get_deposit_count() external view returns (bytes memory);
-}
-
-// Sepolia deposit contract variant of the source code https://github.com/protolambda/testnet-dep-contract/blob/master/deposit_contract.sol
-interface ISepoliaDepositContract is IDepositContract, IERC20 { }
-
-// Sepolia testnet deposit contract have a bit different logic than the mainnet deposit contract.
-// The differences are:
-// 1. Sepolia contract require specific Bepolia token to be used for depositing. It burns this token after depositing.
-// 2. It returns the ETH to the sender after depositing.
-// This adapter is used to make the mainnet deposit contract compatible with the testnet deposit contract.
-// For further information see Sepolia deposit contract variant source code link above.
-contract SepoliaDepositAdapter is IDepositContract, Ownable {
-
-    event EthReceived(address sender, uint256 amount);
-
-    event EthRecovered(uint256 amount);
-
-    event BepoliaRecovered(uint256 amount);
-
-    error EthRecoverFailed();
-
-    error BepoliaRecoverFailed();
-
-    error DepositFailed();
-
-    ISepoliaDepositContract public immutable originalContract;
-
-    constructor(address _deposit_contract) {
-        originalContract = ISepoliaDepositContract(_deposit_contract);
-    }
-
-    function get_deposit_root() override external view returns (bytes32) {
-        return originalContract.get_deposit_root();
-    }
-
-    function get_deposit_count() override external view returns (bytes memory) {
-        return originalContract.get_deposit_count();
-    }
-
-    receive() external payable {
-        emit EthReceived(msg.sender, msg.value);
-    }
-
-    function recoverEth() external onlyOwner {
-        uint256 balance = address(this).balance;
-        // solhint-disable-next-line avoid-low-level-calls
-        (bool success,) = owner().call{value: balance}("");
-        if (!success) {
-            revert EthRecoverFailed();
-        }
-        emit EthRecovered(balance);
-    }
-
-    function recoverBepolia() external onlyOwner {
-        uint256 bepoliaOwnTokens = originalContract.balanceOf(address(this));
-        bool success = originalContract.transfer(owner(), bepoliaOwnTokens);
-        if (!success) {
-            revert BepoliaRecoverFailed();
-        }
-        emit BepoliaRecovered(bepoliaOwnTokens);
-    }    
-
-    function deposit(
-        bytes calldata pubkey,
-        bytes calldata withdrawal_credentials,
-        bytes calldata signature,
-        bytes32 deposit_data_root
-    ) override external payable {
-        originalContract.deposit{value: msg.value}(pubkey, withdrawal_credentials, signature, deposit_data_root);
-        // solhint-disable-next-line avoid-low-level-calls
-        (bool success,) = owner().call{value: msg.value}("");
-        if (!success) {
-            revert DepositFailed();
-        }
-    }
-}