diff --git a/dit/object_detection/ditod/table_evaluation/data_structure.py b/dit/object_detection/ditod/table_evaluation/data_structure.py
index 9b992189e..eb65cefd4 100644
--- a/dit/object_detection/ditod/table_evaluation/data_structure.py
+++ b/dit/object_detection/ditod/table_evaluation/data_structure.py
@@ -3,7 +3,7 @@
 Yu Fang - March 2019
 """
 
-from collections import Iterable
+from collections.abc import Iterable
 
 import numpy as np
 from shapely.geometry import Polygon
@@ -466,4 +466,4 @@ def resTotal(self):
         return self._resTotal
 
     def __str__(self):
-        return "true: {}, gt: {}, res: {}".format(self._truePos, self._gtTotal, self._resTotal)
\ No newline at end of file
+        return "true: {}, gt: {}, res: {}".format(self._truePos, self._gtTotal, self._resTotal)