diff --git a/retrieval/requirements.txt b/retrieval/requirements.txt
index c660113..58f1d36 100644
--- a/retrieval/requirements.txt
+++ b/retrieval/requirements.txt
@@ -5,7 +5,7 @@ matplotlib==3.1.3
 pandas==1.0.1
 scikit_image==0.16.2
 numpy==1.18.1
-opencv_python==4.1.0.25
+opencv_python==4.1.1.26
 Pillow==8.1.1
 PyYAML==5.3.1
 scikit_learn==0.22.2.post1