diff --git a/onnxruntime/python/tools/transformers/models/llama/requirements.txt b/onnxruntime/python/tools/transformers/models/llama/requirements.txt
index ee11227cd3acc..d8b8e0b51b2b1 100644
--- a/onnxruntime/python/tools/transformers/models/llama/requirements.txt
+++ b/onnxruntime/python/tools/transformers/models/llama/requirements.txt
@@ -3,7 +3,7 @@ optimum>=1.14.1
 optree
 transformers==4.52.1
 torch>=2.7.0
-onnx==1.18.0
+onnx==1.21.0
 datasets>=2.8.0
 protobuf==4.25.8
 psutil