diff --git a/requirements.txt b/requirements.txt
index e73e428..2f0be00 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -58,7 +58,7 @@ pyreadline==2.1
 python-engineio==1.7.0
 python-socketio==1.8.3
 requests==2.18.4
-rsa==3.4.2
+rsa==4.1
 six==1.11.0
 urllib3==1.22
 Werkzeug>=0.12.2