diff --git a/requirements.txt b/requirements.txt
index 6a11551..175f398 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 alembic==1.1.0
-ecdsa==0.13.2
+ecdsa==0.13.3
 falcon==2.0.0
 falcon-auth==1.1.0
 gunicorn==19.9.0