diff --git a/renew.sh b/renew.sh
new file mode 100755
index 0000000..428a39b
--- /dev/null
+++ b/renew.sh
@@ -0,0 +1,8 @@
+#! /bin/sh
+
+# The aim of this script is to automatically renew the certificates installed on this machine.
+# You should add a cron job to run this script and make it be executed each night.
+
+service nginx stop
+certbot renew --quiet
+service nginx start