diff --git a/requirements.txt b/requirements.txt
index 7c594a1..6c3b108 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ Cheetah==2.4.4
 circleclient==0.1.6
 colorama==0.2.5
 configobj==4.7.2
-ecdsa==0.13
+ecdsa==0.13.3
 Flask==0.10.1
 Flask-API==0.6.3
 flower==0.8.2