diff --git a/src/diffusers/pipelines/auto_pipeline.py b/src/diffusers/pipelines/auto_pipeline.py
index dc617e642d..c8b682e8af 100644
--- a/src/diffusers/pipelines/auto_pipeline.py
+++ b/src/diffusers/pipelines/auto_pipeline.py
@@ -45,7 +45,7 @@ from .kandinsky2_2 import (
 )
 from .kandinsky3 import Kandinsky3Img2ImgPipeline, Kandinsky3Pipeline
 from .latent_consistency_models import LatentConsistencyModelImg2ImgPipeline, LatentConsistencyModelPipeline
-from .pixart_alpha import PixArtAlphaPipeline
+from .pixart_alpha import PixArtAlphaPipeline, PixArtSigmaPipeline
 from .stable_cascade import StableCascadeCombinedPipeline, StableCascadeDecoderPipeline
 from .stable_diffusion import (
     StableDiffusionImg2ImgPipeline,
@@ -73,7 +73,8 @@ AUTO_TEXT2IMAGE_PIPELINES_MAPPING = OrderedDict(
         ("wuerstchen", WuerstchenCombinedPipeline),
         ("cascade", StableCascadeCombinedPipeline),
         ("lcm", LatentConsistencyModelPipeline),
-        ("pixart", PixArtAlphaPipeline),
+        ("pixart-alpha", PixArtAlphaPipeline),
+        ("pixart-sigma", PixArtSigmaPipeline),
     ]
 )