diff --git a/ch06/myproject_virtualenv/src/django-myproject/requirements/_base.txt b/ch06/myproject_virtualenv/src/django-myproject/requirements/_base.txt
index 3d09e04..53dfb9c 100644
--- a/ch06/myproject_virtualenv/src/django-myproject/requirements/_base.txt
+++ b/ch06/myproject_virtualenv/src/django-myproject/requirements/_base.txt
@@ -27,7 +27,7 @@ pytz==2019.2
 redis==3.3.11
 requests==2.22.0
 requests-oauthlib==1.3.0
-rsa==4.0
+rsa==4.7
 six==1.13.0
 social-auth-app-django==3.1.0
 social-auth-core==3.2.0