diff --git a/requirements.txt b/requirements.txt
index 3fb5993..041af9d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -51,7 +51,7 @@ python3-openid==3.1.0
 pytz==2017.3
 requests==2.18.4
 requests-oauthlib==0.8.0
-rsa==3.4.2
+rsa==4.7
 sendgrid==5.3.0
 six==1.11.0
 sorl-thumbnail==12.4.1