diff --git a/stubs/twisted/internet/tksupport.pyi b/stubs/twisted/internet/tksupport.pyi
new file mode 100644
--- /dev/null
+++ b/stubs/twisted/internet/tksupport.pyi
@@ -0,0 +1,3 @@
+from typing import Any
+
+def install(root: Any, ms: int=20): ...