diff --git a/tests/constraints.txt b/tests/constraints.txt
index b964d71d91509f..930e225590a017 100644
--- a/tests/constraints.txt
+++ b/tests/constraints.txt
@@ -16,7 +16,7 @@ tensorflow>=2.5,<2.17.0
 requests>=2.25.1
 opencv-python>=4.5
 paddlepaddle==2.6.0
-protobuf>=3.18.1,<4.0.0
+protobuf>=3.18.1,<6.0.0
 py>=1.9.0
 pytest>=5.0,<7.5
 pytest-dependency==0.5.1