diff --git a/requirements.txt b/requirements.txt
index a275bcf2..68352f0b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ skl2onnx==1.17.0
 onnxruntime==1.19.2
 tensorflow==2.16.2
 parameterized==0.9.0
-protobuf==4.25.5
+protobuf==5.28.3
 setuptools==75.2.0
 kneed==0.8.5
 sympy==1.13.3