diff --git a/requirements.txt b/requirements.txt
index 17a58fd..4329415 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ Pygments==2.1.3
 pyparsing==2.2.0
 PyYAML==3.12
 requests==2.13.0
-rsa==3.4.2
+rsa==4.7
 simplegeneric==0.8.1
 six==1.10.0
 traitlets==4.3.1