diff --git a/requirements_test.txt b/requirements_test.txt
index 6fd371b..5a5b47a 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -2,7 +2,7 @@ pylint==2.15.5
 black==22.10.0
 flake8==5.0.4
 isort==5.10.1
-mypy==0.982
+mypy==0.991
 types-protobuf==3.20.4.4
 pytest>=6.2.4,<8
 pytest-asyncio>=0.15.1,<1