diff --git a/requirements.txt b/requirements.txt
index 7a4cc96..5e14669 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ PyPDF2==1.26.0
 python-dateutil==2.6.0
 pytz==2017.2
 requests==2.16.5
-rsa==3.4.2
+rsa==4.7
 service-identity==17.0.0
 six==1.10.0
 Twisted==17.1.0