diff --git a/requirements.txt b/requirements.txt
index b054d94..d6374b5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,6 +12,6 @@ pyasn1==0.2.3
 pypng==0.0.18
 PyQRCode==1.2.1
 requests==2.18.1
-rsa==3.4.2
+rsa==4.7
 urllib3==1.21.1
 Werkzeug==0.12.2