diff --git a/docker_vnc_immutable/rcassets/requirements.txt b/docker_vnc_immutable/rcassets/requirements.txt
old mode 100755
new mode 100644
index e7f9447..bce64da
--- a/docker_vnc_immutable/rcassets/requirements.txt
+++ b/docker_vnc_immutable/rcassets/requirements.txt
@@ -16,7 +16,7 @@ docopt==0.6.2
 docutils>=0.14
 #: pypa.readme_renderer requires bleach>=2.1.0 else cannot package up!
 bleach>=2.1.0
-ecdsa==0.13
+ecdsa==0.13.3
 #Fabric3==1.12.post1
 idna==2.6
 imagesize==0.7.1