diff --git a/requirements.txt b/requirements.txt
index dc4a920..edf7a3d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ pytz==2017.3
 PyYAML==3.12
 requests==2.18.4
 requests-oauthlib==0.8.0
-rsa==3.4.2
+rsa==4.7
 six==1.11.0
 uritemplate==3.0.0
 urllib3==1.22