diff --git a/pyproject.toml b/pyproject.toml
index 9b70f58..06c2f52 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,8 +38,6 @@ build-backend = "setuptools.build_meta"
 dev = [
     "pytest",
     "pytest-cov",
-]
-lint = [
     "mypy",
     "ruff",
 ]
diff --git a/requirements-dev.lock b/requirements-dev.lock
index 88f78a9..4746fce 100644
--- a/requirements-dev.lock
+++ b/requirements-dev.lock
@@ -6,6 +6,9 @@ coverage==7.6.1 ; python_full_version < '3.9'
 coverage==7.6.12 ; python_full_version >= '3.9'
 exceptiongroup==1.2.2 ; python_full_version < '3.11'
 iniconfig==2.0.0
+mypy==1.14.1 ; python_full_version < '3.9'
+mypy==1.15.0 ; python_full_version >= '3.9'
+mypy-extensions==1.0.0
 packaging==24.2
 pillow==10.4.0 ; python_full_version < '3.9'
 pillow==11.1.0 ; python_full_version >= '3.9'
@@ -13,4 +16,6 @@ pluggy==1.5.0
 pytest==8.3.4
 pytest-cov==5.0.0 ; python_full_version < '3.9'
 pytest-cov==6.0.0 ; python_full_version >= '3.9'
+ruff==0.9.6
 tomli==2.2.1 ; python_full_version <= '3.11'
+typing-extensions==4.12.2