diff --git a/requirements.txt b/requirements.txt
index 59fbca1..9f2a6e8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ pyasn1-modules==0.2.2
 python-dateutil==2.7.3
 pytz==2018.5
 requests==2.19.1
-rsa==3.4.2
+rsa==4.7
 six==1.11.0
 urllib3==1.23
 zope.interface==4.5.0