diff --git a/nixos/modules/services/home-automation/matter-server.nix b/nixos/modules/services/home-automation/matter-server.nix
index b05991148c4e..d01b70e89c14 100644
--- a/nixos/modules/services/home-automation/matter-server.nix
+++ b/nixos/modules/services/home-automation/matter-server.nix
@@ -109,6 +109,7 @@ in
           "AF_INET"
           "AF_INET6"
           "AF_NETLINK"
+          "AF_UNIX"
         ];
         RestrictNamespaces = true;
         RestrictRealtime = true;