diff --git a/requirements-dev.txt b/requirements-dev.txt
index c5d90f3c..a3dcf9a8 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -15,7 +15,7 @@ flake8-noqa==1.2.1
 flake8-polyfill==1.0.2
 flake8-use-fstring==1.3
 
-mypy==0.920
+mypy==0.921
 pep8-naming==0.12.1
 safety==1.10.3
 types-requests==2.26.2