diff --git a/requirements-dev.txt b/requirements-dev.txt
index cf3d3ef80..36fdee0bb 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,7 +2,7 @@ pyreadline3
 pytest
 numpy            < 2.0.0
 onnx             ==1.17.0
-protobuf         ==4.25.8
+protobuf         ==5.29.6
 # multiple versions of onnxruntime are supported, but only one can be installed at a time
 onnxruntime      >=1.18.0
 onnxscript       ==0.1.0