diff --git a/tests/mocks/mock_dynamixel.py b/tests/mocks/mock_dynamixel.py
index a81c49cb..d446bf27 100644
--- a/tests/mocks/mock_dynamixel.py
+++ b/tests/mocks/mock_dynamixel.py
@@ -281,7 +281,7 @@ class MockInstructionPacket(MockDynamixelPacketv2):
     @classmethod
     def sync_write(
         cls,
-        ids_values: dict[int,int],
+        ids_values: dict[int, int],
         start_address: int,
         data_length: int,
     ) -> bytes:
diff --git a/tests/mocks/mock_feetech.py b/tests/mocks/mock_feetech.py
index 636aa9c8..a73b842d 100644
--- a/tests/mocks/mock_feetech.py
+++ b/tests/mocks/mock_feetech.py
@@ -151,7 +151,7 @@ class MockInstructionPacket(MockFeetechPacket):
     @classmethod
     def sync_write(
         cls,
-        ids_values: dict[int,int],
+        ids_values: dict[int, int],
         start_address: int,
         data_length: int,
     ) -> bytes: