diff --git a/Blogs-and-tutorials.md b/Blogs-and-tutorials.md
index 2392ba8..8ac21c9 100644
--- a/Blogs-and-tutorials.md
+++ b/Blogs-and-tutorials.md
@@ -49,6 +49,8 @@ Here are some blogs that may help you:
 1. https://cpbotha.net/2016/07/18/installing-free-lets-encrypt-ssl-certificates-on-webfaction-in-3-easy-steps/
 1. http://www.ecsoft2.org/howto/using-let%E2%80%99s-encrypt-os2
 1. https://ramy.nl/2016/03/23/installing-lets-encrypt-on-ubuntu-14-04/
+1. https://www.naschenweng.info/2017/01/06/securing-ubiquiti-unifi-cloud-key-encrypt-automatic-dns-01-challenge/
+1. https://www.naschenweng.info/2017/01/06/automatic-ssl-renewal-encrypt-dsm-5-x-synology-ds1010-dns-01-verification/
 
 ## French
 1. https://howto.biapy.com/fr/debian-gnu-linux/systeme/logiciels/installer-le-client-certbot-lets-encrypt-acme-sh-sur-debian