diff --git a/tutorial/Detect-Facial-Features/requirements.txt b/tutorial/Detect-Facial-Features/requirements.txt
index 6da67cb..4dc595e 100644
--- a/tutorial/Detect-Facial-Features/requirements.txt
+++ b/tutorial/Detect-Facial-Features/requirements.txt
@@ -9,5 +9,5 @@ Cython==0.25.2
 dlib==19.4.0
 numpy==1.13.1
 numpydoc==0.6.0
-opencv-python==3.2.0+contrib
+opencv-python==4.2.0.32
 Pillow==4.2.0
\ No newline at end of file