diff --git a/src/superscript.py b/src/superscript.py
index b408369..e912951 100644
--- a/src/superscript.py
+++ b/src/superscript.py
@@ -143,7 +143,6 @@ from pathlib import Path
 from multiprocessing import Pool
 import platform
 import sys
-from concurrent.futures import ThreadPoolExecutor
 import time
 import warnings