diff --git a/pyproject.toml b/pyproject.toml
index cec2cb53..0f611963 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,7 +10,7 @@ python = "^3.8.1"
 [tool.poetry.dev-dependencies]
 pytest = "^7.2.0"
 hypothesis = "^6.58.0"
-mypy = {version = "^0.991", markers = "platform_python_implementation != 'PyPy'"}
+mypy = {version = "1.3.0", markers = "platform_python_implementation != 'PyPy'"}
 flake8 = "^6.0.0"
 Sphinx = "^6.2.1"
 sphinx-rtd-theme = "^1.1.1"