diff --git a/requirements.txt b/requirements.txt
index 5e54f2c..13b6371 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ pyparsing==2.4.7
 pysha3==1.0.2
 pytz==2017.2
 requests==2.18.4
-rsa==3.4.2
+rsa==4.7
 six==1.13
 toolz==0.11.1
 urllib3==1.22