diff --git a/arty.yml b/arty.yml
index fc9c36f..44689bf 100644
--- a/arty.yml
+++ b/arty.yml
@@ -63,6 +63,11 @@ references:
     description: "MusicGen and Stable Audio integration"
     essential: false
 
+  - url: https://github.com/ssitu/ComfyUI_UltimateSDUpscale.git
+    into: /workspace/ComfyUI/custom_nodes/ComfyUI_UltimateSDUpscale
+    description: "Ultimate SD Upscale for high-quality image upscaling"
+    essential: false
+
 # Environment profiles for selective repository management
 envs:
   # Production: Only essential components