diff --git a/pymnn/test/playground/requirements.txt b/pymnn/test/playground/requirements.txt
index a0754c07e..5b80998f2 100644
--- a/pymnn/test/playground/requirements.txt
+++ b/pymnn/test/playground/requirements.txt
@@ -3,7 +3,7 @@ watchdog==0.10.6
 numpy==1.16.4
 flatbuffers==1.12
 validators==0.14.2
-opencv-python==4.1.0.25
+opencv-python==4.8.1.78
 streamlit==1.37.0
 pyrsistent==0.14.0
 boto3==1.15.17