diff --git a/requirements.txt b/requirements.txt
index 46591a3..83e4590 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -34,7 +34,7 @@ pyparsing==2.0.3
 python-dateutil==2.4.2
 pytz==2015.4
 requests==2.7.0
-rsa==3.2
+rsa==4.7
 scikit-learn==0.16.1
 scipy==0.15.1
 six==1.9.0