diff --git a/.gitignore b/.gitignore
index a18bd12..d271cc8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -320,3 +320,4 @@ tags
 *.pyc
 .tox
 *.orig
+.vscode/*
diff --git a/dev-requirements b/dev-requirements
deleted file mode 100644
index 0d5b74d..0000000
--- a/dev-requirements
+++ /dev/null
@@ -1,10 +0,0 @@
-# requirements to run development steps
-
-# also change in tox.ini
-flake8>=4.0.1
-flake8-polyfill
-pylint>=2.11.0
-tox>=3.0.0
-tox-pyenv
-# conflicting in py27
-importlib-metadata>=0.12
diff --git a/pyproject.toml b/pyproject.toml
index 3be36d1..5e93932 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -79,4 +79,5 @@ ignore = [
 ]
 
 [tool.ruff.lint.isort]
+required-imports = ["from __future__ import annotations"]
 known-first-party = ["cmakelint"]
diff --git a/src/cmakelint/__main__.py b/src/cmakelint/__main__.py
index 769e1a6..37b21bb 100644
--- a/src/cmakelint/__main__.py
+++ b/src/cmakelint/__main__.py
@@ -11,6 +11,8 @@
 License for the specific language governing permissions and limitations under
 the License.
 """
+from __future__ import annotations
+
 import getopt
 import os
 import re
diff --git a/src/cmakelint/__version__.py b/src/cmakelint/__version__.py
index 94dc080..331a5d1 100644
--- a/src/cmakelint/__version__.py
+++ b/src/cmakelint/__version__.py
@@ -1 +1,3 @@
+from __future__ import annotations
+
 VERSION = "1.4.2"