diff --git a/pure_interface/interface.py b/pure_interface/interface.py
index f97114a..fc39ff0 100644
--- a/pure_interface/interface.py
+++ b/pure_interface/interface.py
@@ -137,6 +137,8 @@ def _builtin_attrs(name: str) -> bool:
         "_abc_negative_cache",
         "_pi",
         "_pi_unwrap_decorators",
+        "__firstlineno__",
+        "__static_attributes__",
     )