diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 9c903fa..f627e4c
--- a/requirements.txt
+++ b/requirements.txt
@@ -58,7 +58,7 @@ notebook==5.1.0rc3
 numpy==1.13.1
 oauth2client==2.2.0
 olefile==0.44
-opencv-contrib-python==3.3.0.10
+opencv-contrib-python==3.3.1.11
 packaging==16.8
 panda==0.3.1
 pandas==0.19.2