diff --git a/requirements.txt b/requirements.txt
index 853ea2f..e0b6caf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -54,7 +54,7 @@ python-dotenv==0.9.1
 pytz==2018.5
 requests==2.19.1
 rlp==1.0.2
-rsa==3.4.2
+rsa==4.1
 six==1.11.0
 toolz==0.9.0
 urllib3==1.23