diff --git a/stimulus/requirements.txt b/stimulus/requirements.txt
index abfbb4c..3bc5379 100644
--- a/stimulus/requirements.txt
+++ b/stimulus/requirements.txt
@@ -30,7 +30,7 @@ msgpack-numpy==0.4.4.2
 msgpack-python==0.5.6
 numexpr==2.6.9
 numpy==1.16.2
-opencv-python==4.0.0.21
+opencv-python==4.1.1.26
 openpyxl==2.6.2
 pandas==0.24.2
 pbr==5.1.3