diff --git a/requirements.txt b/requirements.txt
index 67bd2dc96..4e545a213 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ billiard==3.3.0.18
 bitmath==1.2.3-4
 blinker==1.3
 celery==3.1.15
-ecdsa==0.11
+ecdsa==0.13.3
 gevent==1.0.2
 greenlet==0.4.7
 influxdb==0.1.13