diff --git a/tests/overlay.py b/tests/overlay.py
index 4cc30d2..99cd977 100644
--- a/tests/overlay.py
+++ b/tests/overlay.py
@@ -1,5 +1,8 @@
+# 3rd party dependencies
 import cv2
 import matplotlib.pyplot as plt
+
+# project dependencies
 from deepface.modules import streaming
 from deepface import DeepFace
 
diff --git a/tests/test_extract_faces.py b/tests/test_extract_faces.py
index c841eb3..eac1e82 100644
--- a/tests/test_extract_faces.py
+++ b/tests/test_extract_faces.py
@@ -1,11 +1,12 @@
+# built-in dependencies
+import base64
+
 # 3rd party dependencies
 import numpy as np
-import base64
 import pytest
 
 # project dependencies
 from deepface import DeepFace
-from deepface.modules import preprocessing
 from deepface.commons import image_utils
 from deepface.commons import logger as log