diff --git a/stubs/autobahn/util.pyi b/stubs/autobahn/util.pyi
new file mode 100644
--- /dev/null
+++ b/stubs/autobahn/util.pyi
@@ -0,0 +1,56 @@
+# Stubs for autobahn.util (Python 3)
+#
+# NOTE: This dynamically typed stub was automatically generated by stubgen.
+
+from typing import Any, Optional
+
+def public(obj: Any): ...
+def encode_truncate(text: Any, limit: Any, encoding: str = ..., return_encoded: bool = ...): ...
+def xor(d1: Any, d2: Any): ...
+def utcstr(ts: Optional[Any] = ...): ...
+def utcnow(): ...
+
+class IdGenerator:
+    def __init__(self) -> None: ...
+    def next(self): ...
+    def __next__(self): ...
+
+def rid(): ...
+def id(): ...
+def newid(length: int = ...): ...
+def generate_token(char_groups: Any, chars_per_group: Any, chars: Optional[Any] = ..., sep: Optional[Any] = ..., lower_case: bool = ...): ...
+def generate_activation_code(): ...
+def generate_user_password(): ...
+def generate_serial_number(): ...
+def rtime(): ...
+
+class Stopwatch:
+    def __init__(self, start: bool = ...) -> None: ...
+    def elapsed(self): ...
+    def pause(self): ...
+    def resume(self): ...
+    def stop(self): ...
+
+class Tracker:
+    tracker: Any = ...
+    tracked: Any = ...
+    def __init__(self, tracker: Any, tracked: Any) -> None: ...
+    def track(self, key: Any) -> None: ...
+    def diff(self, start_key: Any, end_key: Any, formatted: bool = ...): ...
+    def absolute(self, key: Any): ...
+    def __getitem__(self, key: Any): ...
+    def __iter__(self): ...
+
+class EqualityMixin:
+    def __eq__(self, other: Any): ...
+    def __ne__(self, other: Any): ...
+
+class ObservableMixin:
+    def set_valid_events(self, valid_events: Optional[Any] = ...) -> None: ...
+    def on(self, event: Any, handler: Any) -> None: ...
+    def off(self, event: Optional[Any] = ..., handler: Optional[Any] = ...) -> None: ...
+    def fire(self, event: Any, *args: Any, **kwargs: Any): ...
+
+class _LazyHexFormatter:
+    obj: Any = ...
+    def __init__(self, obj: Any) -> None: ...