diff --git a/infrahub_sdk/node/node.py b/infrahub_sdk/node/node.py
index ecf1b773..ff24821c 100644
--- a/infrahub_sdk/node/node.py
+++ b/infrahub_sdk/node/node.py
@@ -198,8 +198,8 @@ def get_kind(self) -> str:
         return self._schema.kind
 
     def get_all_kinds(self) -> list[str]:
-        if hasattr(self._schema, "inherit_from"):
-            return [self._schema.kind] + self._schema.inherit_from
+        if inherit_from := getattr(self._schema, "inherit_from", None):
+            return [self._schema.kind] + inherit_from
         return [self._schema.kind]
 
     def is_ip_prefix(self) -> bool:
diff --git a/pyproject.toml b/pyproject.toml
index cbbabf57..362f38e4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -136,7 +136,6 @@ invalid-await = "ignore"
 invalid-type-form = "ignore"
 no-matching-overload = "ignore"
 unresolved-attribute = "ignore"
-unsupported-operator = "ignore"
 
 [[tool.ty.overrides]]
 include = ["infrahub_sdk/ctl/config.py"]