diff --git a/nixos/modules/services/networking/clatd.nix b/nixos/modules/services/networking/clatd.nix
index 8ddeb51479e4..573d77e71d71 100644
--- a/nixos/modules/services/networking/clatd.nix
+++ b/nixos/modules/services/networking/clatd.nix
@@ -75,6 +75,7 @@ in
           "AF_INET"
           "AF_INET6"
           "AF_NETLINK"
+          "AF_UNIX"
         ];
         RestrictNamespaces = true;
         RestrictRealtime = true;