diff --git a/requirements_dev.txt b/requirements_dev.txt
index b170c0c..bd32a8a 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -2,7 +2,7 @@
 black==23.1.0
 flake8-docstrings==1.6.0
 flake8==6.0.0
-mypy==0.991
+mypy==1.4.1
 pre-commit-hooks==4.4.0
 pre-commit==3.3.3
 pylint==2.17.1