diff --git a/VERSION b/VERSION
index 1629e1f3..94acd658 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1!11.1.7
+1!11.1.8
diff --git a/pycloudlib/azure/instance.py b/pycloudlib/azure/instance.py
index b7a288a0..19c187c4 100644
--- a/pycloudlib/azure/instance.py
+++ b/pycloudlib/azure/instance.py
@@ -290,7 +290,10 @@ def add_network_interface(self, **kwargs) -> str:
             "tags": None,
         }
         nic_name = f"{self.name}-nic-{us}"
-        nic_poller = self._network_client.network_interfaces.begin_create_or_update(
+        # The SDK types `parameters` as a `NetworkInterface` model (or raw bytes),
+        # but it also accepts the ARM-shaped dict we build above, which is what the
+        # rest of this module passes. Ignore the narrower overload, not the call.
+        nic_poller = self._network_client.network_interfaces.begin_create_or_update(  # type: ignore[call-overload]
             self._instance["rg_name"],
             nic_name,
             default_config,