diff --git a/stubs/rx/concurrency/schedulerbase.pyi b/stubs/rx/concurrency/schedulerbase.pyi
new file mode 100644
--- /dev/null
+++ b/stubs/rx/concurrency/schedulerbase.pyi
@@ -0,0 +1,21 @@
+# Stubs for rx.concurrency.schedulerbase (Python 3)
+#
+# NOTE: This dynamically typed stub was automatically generated by stubgen.
+
+import abc
+from rx.core import Scheduler
+from typing import Any, Optional
+
+class SchedulerBase(Scheduler, metaclass=abc.ABCMeta):
+    def invoke_action(self, action: Any, state: Optional[Any] = ...): ...
+    def schedule_periodic(self, period: Any, action: Any, state: Optional[Any] = ...): ...
+    @property
+    def now(self): ...
+    @classmethod
+    def to_relative(cls, timespan: Any): ...
+    @classmethod
+    def to_datetime(cls, duetime: Any): ...
+    @classmethod
+    def to_timedelta(cls, timespan: Any): ...
+    @classmethod
+    def normalize(cls, timespan: Any): ...