diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f4cd620..d7c3e9f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,7 +1,20 @@
 image: python:latest
 
-run:
-  script:
+deploy:
+  stage: deploy
+  only:
+    - master
+  before_script:
     - pip install build twine
+  script:
     - python -m build
     - TWINE_PASSWORD=$PYPI_PASSWORD TWINE_USERNAME=$PYPI_USERNAME python3 -m twine upload dist/*
+
+lint:
+  stage: test
+  before_script:
+    - pip install black flake8 isort flake8-bugbear flake8-builtins flake8-comprehensions flake8-tidy-imports flake8-eradicate flake8-print flake8-return flake8-use-fstring git+https://github.com/derrix060/flake8-expression-complexity.git
+  script:
+    - black --check src/
+    - flake8 src/
+    - isort -c src/
diff --git a/requirements.txt b/requirements.txt
index b1f0ddc..54d3ffc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,14 +1,36 @@
+astpretty==3.0.0
+attrs==23.1.0
+black==23.7.0
 certifi==2023.7.22
 cfgv==3.4.0
 charset-normalizer==3.2.0
+click==8.1.6
 distlib==0.3.7
+eradicate==2.3.0
 filelock==3.12.2
+flake8==6.1.0
+flake8-bugbear==23.7.10
+flake8-builtins==2.1.0
+flake8-comprehensions==3.14.0
+flake8-eradicate==1.5.0
+flake8-expression-complexity @ git+https://github.com/derrix060/flake8-expression-complexity.git@f667ba943e502aa43b138dc28a678b0d3236a3b8
+flake8-plugin-utils==1.3.3
+flake8-print==5.0.0
+flake8-return==1.2.0
+flake8-tidy-imports==4.10.0
+flake8-use-fstring==1.4
 identify==2.5.26
 idna==3.4
+isort==5.12.0
+mccabe==0.7.0
+mypy-extensions==1.0.0
 nodeenv==1.8.0
+packaging==23.1
+pathspec==0.11.2
 platformdirs==3.10.0
 pre-commit==3.3.3
-python-dotenv==1.0.0
+pycodestyle==2.11.0
+pyflakes==3.1.0
 PyYAML==6.0.1
 requests==2.31.0
 urllib3==2.0.4