diff --git a/r.txt b/r.txt
index 679b685..e71b59f 100644
--- a/r.txt
+++ b/r.txt
@@ -17,7 +17,7 @@ decorator==3.4.0
 defusedxml==0.4.1
 docflow==0.3.1
 docutils==0.12
-ecdsa==0.11
+ecdsa==0.13.3
 Fabric==1.7.0
 Flask==0.10.1
 Flask-Admin==1.0.7
diff --git a/requirements.txt b/requirements.txt
index aa297a7..5095c56 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -51,7 +51,7 @@ cycler==0.10.0
 decorator==3.4.0
 docflow==0.3.1
 docutils==0.14
-ecdsa==0.11
+ecdsa==0.13.3
 enum34==1.1.6
 et-xmlfile==1.0.1
 feedparser==5.2.1