diff --git a/python/llm/example/transformers/transformers_int4/GPU/README.md b/python/llm/example/transformers/transformers_int4/GPU/README.md
index 819d66c1..adf52685 100644
--- a/python/llm/example/transformers/transformers_int4/GPU/README.md
+++ b/python/llm/example/transformers/transformers_int4/GPU/README.md
@@ -9,6 +9,7 @@ Step 1, only Linux system is supported now, Ubuntu 22.04 is prefered.
 Step 2, please refer to our [drive installation](https://dgpu-docs.intel.com/installation-guides/index.html#intel-arc-gpus) for general purpose GPU capabilities.
 
 Step 3, you also need to download and install [Intel® oneAPI Base Toolkit](https://www.intel.com/content/www/us/en/developer/tools/oneapi/base-toolkit-download.html). OneMKL and DPC++ compiler are needed, others are optional.
+> **Note**: IPEX 2.0.110+xpu requires Intel® oneAPI Base Toolkit's version >= 2023.2.0.
 
 ## Best Known Configuration on Linux
 For better performance, it is recommended to set environment variables on Linux: