diff --git a/requirements.txt b/requirements.txt
index 5b08f75..9860e47 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,7 +38,7 @@ pytz==2017.3
 PyYAML==3.12
 requests==2.13.0
 retrying==1.3.3
-rsa==3.4.2
+rsa==4.1
 s3transfer==0.1.12
 scikit-learn==0.19.0
 scipy==1.0.0