diff --git a/roles/nginx-proxy/tasks/generate_certs.yml b/roles/nginx-proxy/tasks/generate_certs.yml
index d088c75..35abf8c 100644
--- a/roles/nginx-proxy/tasks/generate_certs.yml
+++ b/roles/nginx-proxy/tasks/generate_certs.yml
@@ -10,6 +10,7 @@
     certbot certonly --standalone
     --non-interactive
     --agree-tos
+    --dry-run
     --email {{ certbot_email | default("admin@" + mydomain) }}
     -d {{ item.key + "." + mydomain if not item.value.internal else item.key + ".internal." + mydomain }}
   loop: "{{ servernames | dict2items }}"