diff --git a/crates/ruff/resources/test/fixtures/flake8_boolean_trap/FBT.py b/crates/ruff/resources/test/fixtures/flake8_boolean_trap/FBT.py
index 44195828903da..eacf248284abe 100644
--- a/crates/ruff/resources/test/fixtures/flake8_boolean_trap/FBT.py
+++ b/crates/ruff/resources/test/fixtures/flake8_boolean_trap/FBT.py
@@ -80,3 +80,6 @@ def foo(self, value: bool) -> None:
     # FBT001: Boolean positional arg in function definition
     def foo(self, value: bool) -> None:
         pass
+
+    def foo(self) -> None:
+        object.__setattr__(self, "flag", True)
diff --git a/crates/ruff/src/rules/flake8_boolean_trap/helpers.rs b/crates/ruff/src/rules/flake8_boolean_trap/helpers.rs
index 463ad690abde4..963fd62b893d7 100644
--- a/crates/ruff/src/rules/flake8_boolean_trap/helpers.rs
+++ b/crates/ruff/src/rules/flake8_boolean_trap/helpers.rs
@@ -28,6 +28,7 @@ pub(super) const FUNC_CALL_NAME_ALLOWLIST: &[&str] = &[
     "pop",
     "remove",
     "setattr",
+    "__setattr__",
     "setdefault",
     "str",
 ];