diff --git a/site-modules/profile/manifests/letsencrypt.pp b/site-modules/profile/manifests/letsencrypt.pp
index 1765c67a..6051400b 100644
--- a/site-modules/profile/manifests/letsencrypt.pp
+++ b/site-modules/profile/manifests/letsencrypt.pp
@@ -1,28 +1,29 @@
 # Base configuration for Let's Encrypt
 
 class profile::letsencrypt {
   include ::profile::letsencrypt::apt_config
   include ::profile::letsencrypt::gandi_livedns_hook
 
   class {'letsencrypt':
     config => {
       email  => lookup('letsencrypt::account_email'),
       server => lookup('letsencrypt::server'),
     }
   }
 
   $certificates = lookup('letsencrypt::certificates', Hash)
 
   $certificates.each |$key, $settings| {
     $domains = $settings['domains']
     ::letsencrypt::certonly {$key:
       domains         => $domains,
-      plugin          => 'standalone',
+      custom_plugin   => true,
       additional_args => [
+        '--authenticator manual',
         '--preferred-challenges dns',
         "--manual-auth-hook '${::profile::letsencrypt::gandi_livedns_hook::hook_path} auth'",
         "--manual-cleanup-hook '${::profile::letsencrypt::gandi_livedns_hook::hook_path} cleanup'",
       ],
     }
   }
 }