diff --git a/tasks/main.yml b/tasks/main.yml
index ade2b5e..c0edf1d 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -36,7 +36,7 @@
       prometheus_certs: |
         {
           'prometheus_agent': {
-            'san': ['{{ inventory_hostname }}'],
+            'san': ['{{ inventory_hostname }}', '{{ ansible_fqdn }}'],
             'backend': 'selfsigned'
           }
         }