diff --git a/vllm/transformers_utils/__init__.py b/vllm/transformers_utils/__init__.py
index 74ca3962..eeec029f 100644
--- a/vllm/transformers_utils/__init__.py
+++ b/vllm/transformers_utils/__init__.py
@@ -9,7 +9,7 @@ if VLLM_USE_MODELSCOPE:
     if version.parse(modelscope.__version__) <= version.parse('1.18.0'):
         raise ImportError(
             'Using vLLM with ModelScope needs modelscope>=1.18.1, please '
-            'install by `pip install modelscope>=1.18.1`')
+            'install by `pip install modelscope -U`')
 
     from modelscope.utils.hf_util import patch_hub