diff --git a/compose_viz/spec/compose_spec.py b/compose_viz/spec/compose_spec.py
index 9c86710..d1e466e 100644
--- a/compose_viz/spec/compose_spec.py
+++ b/compose_viz/spec/compose_spec.py
@@ -379,7 +379,7 @@ class Network(YamlModel):
     driver: Optional[str] = None
     driver_opts: Optional[Dict[constr(regex=r"^.+$"), Union[str, float]]] = None  # type: ignore  # noqa: F722
     ipam: Optional[Ipam] = None
-    external: Optional[ExternalNetwork] = None
+    external: Optional[bool | ExternalNetwork] = None
     internal: Optional[bool] = None
     enable_ipv6: Optional[bool] = None
     attachable: Optional[bool] = None
diff --git a/tests/ymls/networks/docker-compose.yml b/tests/ymls/networks/docker-compose.yml
index 9210e39..82ca073 100644
--- a/tests/ymls/networks/docker-compose.yml
+++ b/tests/ymls/networks/docker-compose.yml
@@ -26,3 +26,5 @@ networks:
   front-tier:
   back-tier:
   admin:
+  traefik-public:
+    external: true