diff --git a/hosts/cube/grafana.nix b/hosts/cube/grafana.nix
index 84b14d6..ceeea31 100644
--- a/hosts/cube/grafana.nix
+++ b/hosts/cube/grafana.nix
@@ -37,7 +37,7 @@ in serverSystemConfiguration {
       database.user = "grafana";
 
       server.domain    = fqdn;
-      server.http_addr = "::";
+      server.http_addr = "[::]";
       server.http_port = 8000;
 
       users.default_theme = "system";