diff --git a/pyproject.toml b/pyproject.toml
index c07b468..b8e2a1c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ typing-extensions = ">= 4.10.0"
 ruff = "0.2.2"
 
 [tool.poetry.group.check.dependencies]
-mypy = "1.8.0"
+mypy = "1.9.0"
 
 [tool.poetry.group.check.dependencies.pre-commit]
 version = "3.6.2"