diff --git a/tests/constraints.txt b/tests/constraints.txt
index 4e3455dd1b8b27..3a1b1f4487088d 100644
--- a/tests/constraints.txt
+++ b/tests/constraints.txt
@@ -16,7 +16,7 @@ test-generator==0.1.2
 requests>=2.25.1
 opencv-python>=4.5
 paddlepaddle==2.5.0
-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