diff --git a/imshow/plugins/tile.py b/imshow/plugins/tile.py
index a64b8a5..ec933db 100644
--- a/imshow/plugins/tile.py
+++ b/imshow/plugins/tile.py
@@ -1,5 +1,6 @@
 import itertools
 import os
+from typing import List
 
 import imgviz
 import numpy as np
@@ -53,9 +54,9 @@ def add_arguments(parser):
 
     row: int
     col: int
-    padding_color: list[int]
+    padding_color: List[int]
     border_width: int
-    border_color: list[int]
+    border_color: List[int]
 
     def __init__(self, args):
         super().__init__(args=args)