diff --git a/requirements.txt b/requirements.txt
index f5fdde0..df01e10 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
 th2-grpc-common>=4.7.5,<5
-mypy-protobuf>=3.6,<6
+mypy-protobuf>=5.1.0,<6