diff --git a/requirements.txt b/requirements.txt
index 27c2b08..57e98ce 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ cycler==0.10.0
 decorator==4.3.0
 docker-pycreds==0.3.0
 docker==3.4.1
-ecdsa==0.13
+ecdsa==0.13.3
 entrypoints==0.2.3; python_version >= '2.7'
 escapism==1.0.0
 future==0.16.0