diff --git a/requirements.txt b/requirements.txt
index 7d96359..2861498 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ deap==1.2.2
 decorator==4.3.0
 defusedxml==0.6.0
 docopt==0.6.2
-ecdsa==0.13
+ecdsa==0.13.3
 entrypoints==0.3
 filelock==3.0.12
 google-auth==1.11.2