diff --git a/py/requirements.txt b/py/requirements.txt
index ec41dae..c7ff490 100644
--- a/py/requirements.txt
+++ b/py/requirements.txt
@@ -14,4 +14,4 @@ opencv-python == 4.2.0.32
 opencv-python-aarch64 == 3.3.0.1
 
 # py/selectivesearchsegmentation_demo.py: 15
-opencv-python-headless == 4.2.0.32
+opencv-python-headless == 4.8.1.78