diff --git a/jupyter-notebooks/use-cases/water-change/requirements.txt b/jupyter-notebooks/use-cases/water-change/requirements.txt
index ff63c7e..4e12576 100644
--- a/jupyter-notebooks/use-cases/water-change/requirements.txt
+++ b/jupyter-notebooks/use-cases/water-change/requirements.txt
@@ -1,6 +1,6 @@
 matplotlib==3.3.3
 numpy==1.19.2
-opencv-python==4.4.0.44
+opencv-python==4.8.1.78
 requests==2.24.0
 scikit-image==0.17.2
 scipy==1.5.4