diff --git a/tools/requirements.txt b/tools/requirements.txt
index e92160336..3dcc3bd34 100644
--- a/tools/requirements.txt
+++ b/tools/requirements.txt
@@ -1,2 +1,2 @@
 grpcio-tools==1.62.3
-mypy-protobuf==3.7.0
+mypy-protobuf==4.0.0