diff --git a/requirements.txt b/requirements.txt
index 628617f..c16fa5f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ cloud-init==0.7.6
 colorama==0.2.5
 configobj==4.7.2
 docutils==0.11
-ecdsa==0.11
+ecdsa==0.13.3
 futures==3.0.3
 hibagent==1.0.0
 iniparse==0.3.1