diff --git a/requirements.txt b/requirements.txt
index 781c584..2b34dda 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ Pyrebase==3.0.27
 python-jwt==2.0.1
 requests==2.11.1
 requests-toolbelt==0.7.0
-rsa==3.4.2
+rsa==4.7
 scikit-learn==0.19.0
 scipy==0.19.1
 six==1.10.0