diff --git a/requirements-testupgrade.txt b/requirements-testupgrade.txt
index 3bd8ccb..f3fbec9 100644
--- a/requirements-testupgrade.txt
+++ b/requirements-testupgrade.txt
@@ -1,4 +1,4 @@
-opencv-contrib-python==4.9.0.80
+opencv-contrib-python==4.8.1.78
 imutils==0.5.4
 pyzm==0.3.56
 numpy==1.26.4
diff --git a/requirements.txt b/requirements.txt
index a8bd791..a4ca59c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-opencv-contrib-python==4.5.5.64
+opencv-contrib-python==4.8.1.78
 imutils==0.5.4
 pyzm==0.3.56
 numpy==1.24.2