diff --git a/backend/loader.py b/backend/loader.py
index 701219d8..5c11d5b0 100644
--- a/backend/loader.py
+++ b/backend/loader.py
@@ -20,6 +20,7 @@ from backend.diffusion_engine.flux import Flux
 from backend.diffusion_engine.flux2 import Flux2
 from backend.diffusion_engine.lumina import Lumina2
 from backend.diffusion_engine.mugen import Mugen
+from backend.diffusion_engine.pid import PiD
 from backend.diffusion_engine.qwen import QwenImage
 from backend.diffusion_engine.sd15 import StableDiffusion
 from backend.diffusion_engine.sdxl import StableDiffusionXL, StableDiffusionXLRefiner
@@ -41,7 +42,7 @@ from backend.utils import (
 )
 from modules_forge.packages.comfy.utils import convert_diffusers_mmdit
 
-possible_models: tuple["ForgeDiffusionEngine"] = (StableDiffusion, StableDiffusionXLRefiner, StableDiffusionXL, Mugen, Chroma, Flux, Flux2, Wan, QwenImage, Lumina2, ZImage, Anima, ErnieImage)
+possible_models: tuple["ForgeDiffusionEngine"] = (StableDiffusion, StableDiffusionXLRefiner, StableDiffusionXL, Mugen, Chroma, Flux, Flux2, Wan, QwenImage, Lumina2, ZImage, Anima, ErnieImage, PiD)
 
 logger = logging.getLogger("loader")
 setup_logger(logger)