diff --git a/maas/client/viscera/interfaces.py b/maas/client/viscera/interfaces.py
index c9d2a22..0ba772b 100644
--- a/maas/client/viscera/interfaces.py
+++ b/maas/client/viscera/interfaces.py
@@ -7,6 +7,7 @@
 
 from . import (
     check,
+    check_optional,
     Object,
     ObjectField,
     ObjectFieldRelated,
@@ -94,6 +95,7 @@ class Interface(Object, metaclass=InterfaceTypeMeta):
     parents = ObjectFieldRelatedSet(
         "parents", "Interfaces", reverse=None, map_func=map_nic_name_to_dict
     )
+    product = ObjectField.Checked("product", check_optional(str), readonly=True)
     children = ObjectFieldRelatedSet(
         "children", "Interfaces", reverse=None, map_func=map_nic_name_to_dict
     )
diff --git a/maas/client/viscera/machines.py b/maas/client/viscera/machines.py
index f9ac96d..7637914 100644
--- a/maas/client/viscera/machines.py
+++ b/maas/client/viscera/machines.py
@@ -352,6 +352,9 @@ class Machine(Node, metaclass=MachineType):
     cpus = ObjectField.Checked("cpu_count", check(int), check(int))
     disable_ipv4 = ObjectField.Checked("disable_ipv4", check(bool), check(bool))
     distro_series = ObjectField.Checked("distro_series", check(str), readonly=True)
+    hardware_info = ObjectField.Checked(
+        "hardware_info", check(dict), check(dict), readonly=True
+    )
     hwe_kernel = ObjectField.Checked(
         "hwe_kernel", check_optional(str), check_optional(str)
     )