diff --git a/optimum/onnxruntime/modeling_diffusion.py b/optimum/onnxruntime/modeling_diffusion.py
index a7faecfcfa6..79d302be449 100644
--- a/optimum/onnxruntime/modeling_diffusion.py
+++ b/optimum/onnxruntime/modeling_diffusion.py
@@ -1075,6 +1075,7 @@ def _get_ort_class(pipeline_class_name: str, throw_error_if_not_exist: bool = Tr
 ORT_INPAINT_PIPELINES_MAPPING = OrderedDict(
     [
         ("stable-diffusion", ORTStableDiffusionInpaintPipeline),
+        ("stable-diffusion-3", ORTStableDiffusion3InpaintPipeline),
         ("stable-diffusion-xl", ORTStableDiffusionXLInpaintPipeline),
     ]
 )