diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index a1a784c..7bad833 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -41,8 +41,6 @@ repos:
     rev: v1.13.0
     hooks:
       - id: mypy
-        args:
-          - --strict
         additional_dependencies:
           - 'hypothesis>=6.99.12,<7.0'
           - 'pytest>=8.1.1,<9.0'
diff --git a/pyproject.toml b/pyproject.toml
index 59970dd..ef68caa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -36,6 +36,9 @@ build-backend = "setuptools.build_meta"
 [tool.coverage.run]
 source = ["cfractions"]
 
+[tool.mypy]
+strict = true
+
 [tool.pytest.ini_options]
 addopts = "--verbose -s --hypothesis-profile=default"