diff --git a/requirements.txt b/requirements.txt
index b33d485..cb0600c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ protobuf==3.4.0
 pyasn1==0.3.7
 pyasn1-modules==0.1.5
 requests==2.18.4
-rsa==3.4.2
+rsa==4.1
 six==1.11.0
 urllib3==1.22