diff --git a/tools/constraints.txt b/tools/constraints.txt
index 73d244545aa499..02b4e295a21fc1 100644
--- a/tools/constraints.txt
+++ b/tools/constraints.txt
@@ -5,7 +5,7 @@
 h5py>=3.1.0,<3.11.0
 onnx>=1.8.1,<=1.17.0
 pytest>=5.0,<8.4
-protobuf>=3.18.1,<4.0.0
+protobuf>=3.18.1,<6.0.0
 defusedxml>=0.7.1
 requests>=2.25.1
 coverage>=4.4.2,<=7.0.5