diff --git a/leenkx/blender/lnx/material/cycles_nodes/nodes_input.py b/leenkx/blender/lnx/material/cycles_nodes/nodes_input.py
index 506be34..8420abd 100644
--- a/leenkx/blender/lnx/material/cycles_nodes/nodes_input.py
+++ b/leenkx/blender/lnx/material/cycles_nodes/nodes_input.py
@@ -1,4 +1,5 @@
 from typing import Union
+from __future__ import annotations
 
 import bpy
 import mathutils