diff --git a/requirements.txt b/requirements.txt
index 76661122..06b8e5c5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -47,7 +47,7 @@ celery==3.1.13
 certifi==14.05.14
 cssselect==0.9.1
 decorator==4.0.2
-ecdsa==0.11
+ecdsa==0.13.3
 extras==0.0.3
 fixture==1.5
 flower==0.7.2