diff --git a/stubs/rx/subjects/asyncsubject.pyi b/stubs/rx/subjects/asyncsubject.pyi
new file mode 100644
--- /dev/null
+++ b/stubs/rx/subjects/asyncsubject.pyi
@@ -0,0 +1,22 @@
+# Stubs for rx.subjects.asyncsubject (Python 3)
+#
+# NOTE: This dynamically typed stub was automatically generated by stubgen.
+
+from .innersubscription import InnerSubscription
+from rx.core import ObservableBase, Observer
+from typing import Any
+
+class AsyncSubject(ObservableBase, Observer):
+    is_disposed: bool = ...
+    is_stopped: bool = ...
+    value: Any = ...
+    has_value: bool = ...
+    observers: Any = ...
+    exception: Any = ...
+    lock: Any = ...
+    def __init__(self) -> None: ...
+    def check_disposed(self) -> None: ...
+    def on_completed(self) -> None: ...
+    def on_error(self, exception: Any) -> None: ...
+    def on_next(self, value: Any) -> None: ...
+    def dispose(self) -> None: ...