diff --git a/pyproject.toml b/pyproject.toml
index bb81fc9..e783ae8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,7 +35,7 @@ markers = [
     "unit", # offline
     "integration", # hardhat fork
     "integration_holesky", # holesky fork
-    "integration_chiado" # chiado(gnosis testnet) run only
+    "integration_chiado", # chiado(gnosis testnet) run only
 ]
 
 [tool.ruff]
diff --git a/src/blockchain/contracts/data_bus.py b/src/blockchain/contracts/data_bus.py
index 7957f19..da106fc 100644
--- a/src/blockchain/contracts/data_bus.py
+++ b/src/blockchain/contracts/data_bus.py
@@ -14,5 +14,5 @@ def send_message(self, event_id: bytes, mes: bytes) -> ContractFunction:
         Build send message transaction to Data Bus contract
         """
         tx = self.functions.send_message(event_id, mes)
-        logger.info({'msg': 'Build `send_message(...)` tx.'})
+        logger.info({'msg': f'Build `send_message({event_id.hex()}, {mes.hex()})` tx.'})
         return tx
diff --git a/src/transport/msg_providers/common.py b/src/transport/msg_providers/common.py
index 88377e7..3560688 100644
--- a/src/transport/msg_providers/common.py
+++ b/src/transport/msg_providers/common.py
@@ -1,6 +1,6 @@
 import abc
 import logging
-from typing import Any, List, Optional
+from typing import Any, Optional
 
 from schema import Schema, SchemaError
 
@@ -15,7 +15,7 @@ class BaseMessageProvider(abc.ABC):
     def __init__(self, message_schema: Schema):
         self.message_schema = message_schema
 
-    def get_messages(self) -> List[dict]:
+    def get_messages(self) -> list[dict]:
         """
         Fetches new messages, processes them, and filters out only the valid ones.
 
@@ -25,7 +25,7 @@ def get_messages(self) -> List[dict]:
         return [msg for msg in (self._process_msg(m) for m in self._fetch_messages()) if msg and self._is_valid(msg)]
 
     @abc.abstractmethod
-    def _fetch_messages(self) -> List[Any]:
+    def _fetch_messages(self) -> list[Any]:
         raise NotImplementedError('Receive message from transport.')
 
     def _process_msg(self, msg: Any) -> Optional[dict]: