diff --git a/sdk/python/setup.sh b/sdk/python/setup.sh
index 71b17727f5..ec29a18244 100644
--- a/sdk/python/setup.sh
+++ b/sdk/python/setup.sh
@@ -20,4 +20,7 @@ pip install azure-ai-ml
 # https://docsupport.blob.core.windows.net/ml-sample-submissions/1905732/azure_ai_ml-1.0.0-py3-none-any.whl
 # </az_ml_sdk_test_install>
 
+# protobuf==5.29.0 has IndentationError bug
+pip install "protobuf<=5.28.3"
+
 pip list
\ No newline at end of file