diff --git a/comfy/cli_args.py b/comfy/cli_args.py
index 0d760d524..e511cee60 100644
--- a/comfy/cli_args.py
+++ b/comfy/cli_args.py
@@ -111,6 +111,7 @@ attn_group.add_argument("--use-split-cross-attention", action="store_true", help
 attn_group.add_argument("--use-quad-cross-attention", action="store_true", help="Use the sub-quadratic cross attention optimization . Ignored when xformers is used.")
 attn_group.add_argument("--use-pytorch-cross-attention", action="store_true", help="Use the new pytorch 2.0 cross attention function.")
 attn_group.add_argument("--use-sage-attention", action="store_true", help="Use sage attention.")
+attn_group.add_argument("--use-sage-attention3", action="store_true", help="Use sage attention 3. Supported only on blackwell GPUs.")
 attn_group.add_argument("--use-flash-attention", action="store_true", help="Use FlashAttention.")
 
 parser.add_argument("--disable-xformers", action="store_true", help="Disable xformers.")