diff --git a/skale/manager_client.py b/skale/manager_client.py
index 7fdd4aef..dd31891d 100644
--- a/skale/manager_client.py
+++ b/skale/manager_client.py
@@ -20,6 +20,8 @@
 import logging
 
 from web3 import Web3
+from web3.middleware import geth_poa_middleware
+
 import skale.contracts as contracts
 from skale.wallets import BaseWallet
 from skale.contracts_info import CONTRACTS_INFO
@@ -45,6 +47,7 @@ def __init__(self, endpoint, abi_filepath, wallet=None):
         self._abi_filepath = abi_filepath
         self._endpoint = endpoint
         self.web3 = Web3(provider)
+        self.web3.middleware_onion.inject(geth_poa_middleware, layer=0)  # todo: may cause issues
         self.abi = get_abi(abi_filepath)
         self.__contracts = {}
         self.__contracts_info = {}