diff --git a/requirements.txt b/requirements.txt
index baeca79..2753f30 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ MarkupSafe==1.1.1
 oauth2client==4.1.3
 pyasn1==0.4.5
 pyasn1-modules==0.2.4
-rsa==4.0
+rsa==4.7
 six==1.12.0
 uritemplate==3.0.0
 Werkzeug==0.14.1