diff --git a/requirements-dev.txt b/requirements-dev.txt
index e6320168..7cb35f6c 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -15,7 +15,7 @@ flake8-noqa==1.1.0
 flake8-polyfill==1.0.2
 flake8-use-fstring==1.1
 
-mypy==0.812
+mypy==0.901
 pep8-naming==0.11.1
 safety==1.10.3