diff --git a/comfy/comfy_types/node_typing.py b/comfy/comfy_types/node_typing.py
index 146545b1e..a348791a9 100644
--- a/comfy/comfy_types/node_typing.py
+++ b/comfy/comfy_types/node_typing.py
@@ -116,7 +116,10 @@ class InputTypeOptions(TypedDict):
     tooltip: NotRequired[str]
     """Tooltip for the input (or widget), shown on pointer hover"""
     socketless: NotRequired[bool]
-    """All inputs (including widgets) have an input socket to connect links. When ``true``, if there is a widget for this input, no socket will be created."""
+    """All inputs (including widgets) have an input socket to connect links. When ``true``, if there is a widget for this input, no socket will be created.
+    Available from frontend v1.17.5
+    Ref: https://github.com/Comfy-Org/ComfyUI_frontend/pull/3548
+    """
     # class InputTypeNumber(InputTypeOptions):
     # default: float | int
     min: NotRequired[float]