diff --git a/main.py b/main.py
index 06a7e60..21a2918 100644
--- a/main.py
+++ b/main.py
@@ -3,6 +3,7 @@ if __name__ == "__main__":
     import multiprocessing
     multiprocessing.set_start_method("spawn")
 
+    import sys
     if sys.platform != 'win32':
         import warnings
         warnings.simplefilter(action='ignore', category=UserWarning)