diff --git a/asdf-core/src/test/resources/generation/test_file_generator.py b/asdf-core/src/test/resources/generation/test_file_generator.py
index ebdd406..29b7007 100644
--- a/asdf-core/src/test/resources/generation/test_file_generator.py
+++ b/asdf-core/src/test/resources/generation/test_file_generator.py
@@ -1,6 +1,6 @@
 import argparse
-import sys
 from io import BytesIO
+import sys
 
 import asdf
 import numpy as np