diff --git a/vllm/model_executor/models/baichuan.py b/vllm/model_executor/models/baichuan.py
index b613b70a7564a..2e51b9c9c0c73 100644
--- a/vllm/model_executor/models/baichuan.py
+++ b/vllm/model_executor/models/baichuan.py
@@ -46,7 +46,7 @@ from vllm.model_executor.model_loader.weight_utils import default_weight_loader
 from vllm.model_executor.sampling_metadata import SamplingMetadata
 from vllm.sequence import IntermediateTensors
 
-from .interfaces import SupportsLoRA, SupportsPP
+from .interfaces import SupportsLoRA, SupportsPP, SupportsQuant
 from .utils import (is_pp_missing_parameter,
                     make_empty_intermediate_tensors_factory, make_layers)
 
@@ -334,7 +334,8 @@ class BaiChuanModel(nn.Module):
         return hidden_states
 
 
-class BaiChuanBaseForCausalLM(nn.Module, SupportsLoRA, SupportsPP):
+class BaiChuanBaseForCausalLM(nn.Module, SupportsLoRA, SupportsPP,
+                              SupportsQuant):
     packed_modules_mapping = {
         "W_pack": ["W_pack"],
         "gate_up_proj": [