diff --git a/requirements/local.txt b/requirements/local.txt
index c2d03947c..c616958e5 100644
--- a/requirements/local.txt
+++ b/requirements/local.txt
@@ -3,7 +3,7 @@
 
 # Testing
 # ------------------------------------------------------------------------------
-mypy==0.782  # https://github.com/python/mypy
+mypy==0.991  # https://github.com/python/mypy
 pytest==6.2.5  # https://github.com/pytest-dev/pytest
 pytest-sugar==0.9.4  # https://github.com/Frozenball/pytest-sugar