diff --git a/requirements-dev.txt b/requirements-dev.txt
index 0f10a9f..f1da12a 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -26,7 +26,7 @@ lazy-object-proxy==1.4.3  # via astroid
 mccabe==0.6.1             # via flake8, pylint
 more-itertools==8.0.2     # via pytest
 mypy-extensions==0.4.3    # via mypy
-mypy==0.770               # via -r requirements-dev.in
+mypy==0.781               # via -r requirements-dev.in
 packaging==19.2           # via pytest, tox
 pathspec==0.6.0           # via black
 pip-tools==5.1.2          # via -r requirements-dev.in