diff --git a/stubs/rx/subjects/replaysubject.pyi b/stubs/rx/subjects/replaysubject.pyi
new file mode 100644
--- /dev/null
+++ b/stubs/rx/subjects/replaysubject.pyi
@@ -0,0 +1,30 @@
+# Stubs for rx.subjects.replaysubject (Python 3)
+#
+# NOTE: This dynamically typed stub was automatically generated by stubgen.
+
+from rx.core import ObservableBase, Observer
+from typing import Any, Optional
+
+class RemovableDisposable:
+    subject: Any = ...
+    observer: Any = ...
+    def __init__(self, subject: Any, observer: Any) -> None: ...
+    def dispose(self) -> None: ...
+
+class ReplaySubject(ObservableBase, Observer):
+    buffer_size: Any = ...
+    scheduler: Any = ...
+    window: Any = ...
+    queue: Any = ...
+    observers: Any = ...
+    is_stopped: bool = ...
+    is_disposed: bool = ...
+    has_error: bool = ...
+    error: Any = ...
+    lock: Any = ...
+    def __init__(self, buffer_size: Optional[Any] = ..., window: Optional[Any] = ..., scheduler: Optional[Any] = ...) -> None: ...
+    def check_disposed(self) -> None: ...
+    def on_next(self, value: Any) -> None: ...
+    def on_error(self, error: Any) -> None: ...
+    def on_completed(self) -> None: ...
+    def dispose(self) -> None: ...