diff --git a/requirements-dev.txt b/requirements-dev.txt
index 358ad4d7..4b849f64 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -5,6 +5,6 @@ flake8-bandit==4.1.1
 flake8-bugbear==24.2.6
 flake8-import-order==0.18.2
 flake8-requirements==2.1.0
-mypy==1.8.0; implementation_name=="cpython"
+mypy==1.9.0; implementation_name=="cpython"
 pre-commit==3.6.2
 sphinx==7.2.6