diff --git a/requirements.txt b/requirements.txt
index e92dca7..fce8e42 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,5 +13,5 @@ pyasn1==0.2.3
 pyasn1-modules==0.0.8
 pyparsing==2.2.0
 pytz==2017.2
-rsa==3.4.2
+rsa==4.1
 six==1.10.0