diff --git a/home/server/certificate.md b/home/server/certificate.md
index af25ad2..35c936b 100644
--- a/home/server/certificate.md
+++ b/home/server/certificate.md
@@ -2,11 +2,25 @@
 title: Certificate
 description: 
 published: true
-date: 2025-09-28T15:55:26.949Z
+date: 2025-09-28T16:18:31.664Z
 tags: 
 editor: markdown
 dateCreated: 2025-09-28T15:55:26.949Z
 ---
 
 # Certificate
-Your content here
\ No newline at end of file
+
+Add a domain through Let's Encrypt 
+```
+sudo certbot --nginx -d wiki.duckdns.org
+```
+
+Setup renewal timer
+```
+sudo systemctl enable --now certbot.timer
+```
+
+Renew manualy
+```
+sudo certbot renew --dry-run
+```
\ No newline at end of file