diff --git a/requirements.txt b/requirements.txt
index f94d392..feab676 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ pytz==2019.3
 PyYAML==5.3
 requests==2.22.0
 requests-oauthlib==1.3.0
-rsa==4.0
+rsa==4.7
 SimpleITK
 six==1.14.0
 table-logger==0.3.6