diff --git a/.github/workflows/python-client.yml b/.github/workflows/python-client.yml
index 9f5eeef9a..cb3139673 100644
--- a/.github/workflows/python-client.yml
+++ b/.github/workflows/python-client.yml
@@ -7,11 +7,11 @@ on:
       - develop
       - master
     paths:
-      - ./client/**
+      - client/**
       - .github/workflows/python-client.yml
   pull_request:
     paths:
-      - ./client/**
+      - client/**
       - .github/workflows/python-client.yml
 
 jobs:
diff --git a/client/src/ledger_app_clients/ethereum/client.py b/client/src/ledger_app_clients/ethereum/client.py
index d2015a1aa..bd7544788 100644
--- a/client/src/ledger_app_clients/ethereum/client.py
+++ b/client/src/ledger_app_clients/ethereum/client.py
@@ -2,7 +2,7 @@
 from enum import IntEnum
 from ragger.backend import BackendInterface
 from ragger.utils import RAPDU
-from typing import List, Optional
+from typing import List, Optional, Union
 
 from .command_builder import CommandBuilder
 from .eip712 import EIP712FieldType
@@ -13,13 +13,16 @@
 WEI_IN_ETH = 1e+18
 GWEI_IN_ETH = 1e+9
 
+
 class TxData:
     selector: bytes
     parameters: list[bytes]
+
     def __init__(self, selector: bytes, params: list[bytes]):
         self.selector = selector
         self.parameters = params
 
+
 class StatusWord(IntEnum):
     OK = 0x9000
     ERROR_NO_INFO = 0x6a00
@@ -30,6 +33,7 @@ class StatusWord(IntEnum):
     CONDITION_NOT_SATISFIED = 0x6985
     REF_DATA_NOT_FOUND = 0x6a88
 
+
 class DomainNameTag(IntEnum):
     STRUCTURE_TYPE = 0x01
     STRUCTURE_VERSION = 0x02
@@ -121,7 +125,7 @@ def _sign_common(self,
                      gas_limit: int,
                      destination: bytes,
                      amount: float,
-                     data: TxData):
+                     data: Optional[TxData]):
         tx.append(int(gas_price * GWEI_IN_ETH))
         tx.append(gas_limit)
         tx.append(destination)
@@ -143,8 +147,8 @@ def sign_legacy(self,
                     destination: bytes,
                     amount: float,
                     chain_id: int,
-                    data: TxData = None):
-        tx = list()
+                    data: Optional[TxData] = None):
+        tx: List[Union[int, bytes]] = list()
         tx.append(nonce)
         tx = self._sign_common(tx, gas_price, gas_limit, destination, amount, data)
         tx.append(chain_id)
@@ -161,9 +165,9 @@ def sign_1559(self,
                   gas_limit: int,
                   destination: bytes,
                   amount: float,
-                  data: TxData = None,
-                  access_list = list()):
-        tx = list()
+                  data: Optional[TxData] = None,
+                  access_list=list()):
+        tx: List[Union[int, bytes]] = list()
         tx.append(chain_id)
         tx.append(nonce)
         tx.append(int(max_prio_gas_price * GWEI_IN_ETH))
diff --git a/client/src/ledger_app_clients/ethereum/command_builder.py b/client/src/ledger_app_clients/ethereum/command_builder.py
index 4170a3086..63ab0ae7b 100644
--- a/client/src/ledger_app_clients/ethereum/command_builder.py
+++ b/client/src/ledger_app_clients/ethereum/command_builder.py
@@ -182,12 +182,12 @@ def eip712_filtering_show_field(self, name: str, sig: bytes) -> bytes:
                                P2Type.FILTERING_FIELD_NAME,
                                self._eip712_filtering_send_name(name, sig))
 
-    def set_external_plugin(self, plugin_name: str, contract_address: bytes, method_selelector: bytes, sig: bytes) -> bytes:
+    def set_external_plugin(self, plugin_name: str, contract_address: bytes, selector: bytes, sig: bytes) -> bytes:
         data = bytearray()
         data.append(len(plugin_name))
         data += self._string_to_bytes(plugin_name)
         data += contract_address
-        data += method_selelector
+        data += selector
         data += sig
 
         return self._serialize(InsType.EXTERNAL_PLUGIN_SETUP,
diff --git a/client/src/ledger_app_clients/ethereum/response_parser.py b/client/src/ledger_app_clients/ethereum/response_parser.py
index a00205cbe..641e1bbc9 100644
--- a/client/src/ledger_app_clients/ethereum/response_parser.py
+++ b/client/src/ledger_app_clients/ethereum/response_parser.py
@@ -14,6 +14,7 @@ def challenge(data: bytes) -> int:
     assert len(data) == 4
     return int.from_bytes(data, "big")
 
+
 def pk_addr(data: bytes, has_chaincode: bool = False):
     idx = 0
 
diff --git a/client/src/ledger_app_clients/ethereum/utils.py b/client/src/ledger_app_clients/ethereum/utils.py
index aa3c710d5..e6177455e 100644
--- a/client/src/ledger_app_clients/ethereum/utils.py
+++ b/client/src/ledger_app_clients/ethereum/utils.py
@@ -1,4 +1,5 @@
 import sha3
 
+
 def get_selector_from_function(fn: str) -> bytes:
     return sha3.keccak_256(fn.encode()).digest()[0:4]