diff --git a/machine-learning/app/sessions/rknn/rknnpool.py b/machine-learning/app/sessions/rknn/rknnpool.py
index 38d64ab78a..35927243f9 100644
--- a/machine-learning/app/sessions/rknn/rknnpool.py
+++ b/machine-learning/app/sessions/rknn/rknnpool.py
@@ -4,7 +4,6 @@
 from concurrent.futures import Future, ThreadPoolExecutor
 from pathlib import Path
 from queue import Queue
-from typing import Callable, TypeVar
 
 import numpy as np
 from numpy.typing import NDArray