diff --git a/modules/roles/base.nix b/modules/roles/base.nix
index 8997487..a57ac6e 100644
--- a/modules/roles/base.nix
+++ b/modules/roles/base.nix
@@ -13,7 +13,7 @@
     };
     networking.guaPref = lib.mkOption {
       type = with lib.types; nullOr (strMatching "^[0-9a-zA-Z:]+$");
-      default = "2001:14ba:a090:39";
+      default = "2001:14ba:a038:5b";
       description = "IPv6 GUA Prefix to use in other confs";
     };
   };