diff --git a/nobrainer/models/unetr.py b/nobrainer/models/unetr.py
index 30861617..3969199b 100644
--- a/nobrainer/models/unetr.py
+++ b/nobrainer/models/unetr.py
@@ -2,6 +2,7 @@
 
 Adapted from https://www.kaggle.com/code/usharengaraju/tensorflow-unetr-w-b
 """
+
 import math
 
 import tensorflow as tf