diff --git a/requirements.txt b/requirements.txt
index 98c3fef..e8aa1fe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,7 +24,7 @@ PySocks==1.6.7
 python-dateutil==2.6.0
 pytz==2017.2
 requests==2.17.3
-rsa==3.4.2
+rsa==4.7
 six==1.10.0
 twilio==6.3.0
 urllib3==1.21.1