diff --git a/requirements-dev.txt b/requirements-dev.txt
index f2801c15b..a4d83eb4f 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -7,7 +7,7 @@ coveralls==1.11.1
 flake8==3.7.9
 flake8-type-annotations==0.1.0
 flake8-tidy-imports==4.0.0
-mypy==0.761
+mypy==0.770
 pytest==5.4.1
 pytest-asyncio==0.10.0
 pytest-cov==2.8.1