diff --git a/canopen/lss.py b/canopen/lss.py
index 7c0b92a6..311f77b5 100644
--- a/canopen/lss.py
+++ b/canopen/lss.py
@@ -85,7 +85,7 @@ def __init__(self) -> None:
         self.network: canopen.network.Network = canopen.network._UNINITIALIZED_NETWORK
         self._node_id = 0
         self._data = None
-        self.responses = queue.Queue()
+        self.responses: queue.Queue[bytes] = queue.Queue()
 
     def send_switch_state_global(self, mode):
         """switch mode to CONFIGURATION_STATE or WAITING_STATE
diff --git a/canopen/node/local.py b/canopen/node/local.py
index 886d8ac8..cc1c3d0f 100644
--- a/canopen/node/local.py
+++ b/canopen/node/local.py
@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import logging
+from collections.abc import Callable
 from typing import Union
 
 import canopen.network
@@ -26,8 +27,8 @@ def __init__(
         super(LocalNode, self).__init__(node_id, object_dictionary)
 
         self.data_store: dict[int, dict[int, bytes]] = {}
-        self._read_callbacks = []
-        self._write_callbacks = []
+        self._read_callbacks: list[Callable] = []
+        self._write_callbacks: list[Callable] = []
 
         self.sdo = SdoServer(0x600 + self.id, 0x580 + self.id, self)
         self.tpdo = TPDO(self)
@@ -62,10 +63,10 @@ def remove_network(self) -> None:
         self.nmt.network = canopen.network._UNINITIALIZED_NETWORK
         self.emcy.network = canopen.network._UNINITIALIZED_NETWORK
 
-    def add_read_callback(self, callback):
+    def add_read_callback(self, callback: Callable) -> None:
         self._read_callbacks.append(callback)
 
-    def add_write_callback(self, callback):
+    def add_write_callback(self, callback: Callable) -> None:
         self._write_callbacks.append(callback)
 
     def get_data(
diff --git a/canopen/node/remote.py b/canopen/node/remote.py
index 371f784c..01bf8f82 100644
--- a/canopen/node/remote.py
+++ b/canopen/node/remote.py
@@ -39,7 +39,7 @@ def __init__(
         #: Enable WORKAROUND for reversed PDO mapping entries
         self.curtis_hack = False
 
-        self.sdo_channels = []
+        self.sdo_channels: list[SdoClient] = []
         self.sdo = self.add_sdo(0x600 + self.id, 0x580 + self.id)
         self.tpdo = TPDO(self)
         self.rpdo = RPDO(self)
diff --git a/canopen/objectdictionary/__init__.py b/canopen/objectdictionary/__init__.py
index fa694c56..133476e3 100644
--- a/canopen/objectdictionary/__init__.py
+++ b/canopen/objectdictionary/__init__.py
@@ -207,8 +207,8 @@ def __init__(self, name: str, index: int):
         self.name = name
         #: Storage location of index
         self.storage_location = None
-        self.subindices = {}
-        self.names = {}
+        self.subindices: dict[int, ODVariable] = {}
+        self.names: dict[str, ODVariable] = {}
 
     def __repr__(self) -> str:
         return f"<{type(self).__qualname__} {self.name!r} at {pretty_index(self.index)}>"
@@ -266,8 +266,8 @@ def __init__(self, name: str, index: int):
         self.name = name
         #: Storage location of index
         self.storage_location = None
-        self.subindices = {}
-        self.names = {}
+        self.subindices: dict[int, ODVariable] = {}
+        self.names: dict[str, ODVariable] = {}
 
     def __repr__(self) -> str:
         return f"<{type(self).__qualname__} {self.name!r} at {pretty_index(self.index)}>"
@@ -413,7 +413,7 @@ def add_value_description(self, value: int, descr: str) -> None:
         """
         self.value_descriptions[value] = descr
 
-    def add_bit_definition(self, name: str, bits: List[int]) -> None:
+    def add_bit_definition(self, name: str, bits: list[int]) -> None:
         """Associate bit(s) with a string description.
 
         :param name: Name of bit(s)
@@ -508,7 +508,7 @@ def encode_desc(self, desc: str) -> int:
         raise ValueError(
             f"No value corresponds to '{desc}'. Valid values are: {valid_values}")
 
-    def decode_bits(self, value: int, bits: List[int]) -> int:
+    def decode_bits(self, value: int, bits: list[int]) -> int:
         try:
             bits = self.bit_definitions[bits]
         except (TypeError, KeyError):
@@ -518,7 +518,7 @@ def decode_bits(self, value: int, bits: List[int]) -> int:
             mask |= 1 << bit
         return (value & mask) >> min(bits)
 
-    def encode_bits(self, original_value: int, bits: List[int], bit_value: int):
+    def encode_bits(self, original_value: int, bits: list[int], bit_value: int):
         try:
             bits = self.bit_definitions[bits]
         except (TypeError, KeyError):
diff --git a/pyproject.toml b/pyproject.toml
index e24f6132..73f9914f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -56,3 +56,7 @@ exclude = [
     "^test*",
     "^setup.py*",
 ]
+
+[[tool.mypy.overrides]]
+module = ["canmatrix.*"]
+ignore_missing_imports = true