diff --git a/Makefile b/Makefile
index e2df78c..bc4e7c4 100644
--- a/Makefile
+++ b/Makefile
@@ -10,12 +10,10 @@ coverage:
 
 format:
 	poetry run black .
-	poetry run ruff --select I --fix .
 
 lint:
-	poetry run mypy --exclude tests javelin_sdk/
-	poetry run black . --check
-	poetry run ruff javelin_sdk/
+	poetry run black .
+	poetry run flake8 . --config=.flake8 --output-file=lint-report.json
 
 test:
 	poetry run pytest tests
diff --git a/pyproject.toml b/pyproject.toml
index a270327..48e3b17 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,8 +43,7 @@ pytest-mock = "^3.10.0"
 
 [tool.poetry.group.dev.dependencies]
 black = "24.3.0"
-ruff = "^0.0.265"
-mypy = "^1.2.0"
+flake8 = "^7.3.0"
 pre-commit = "^3.3.1"
 mkdocs = "^1.4.3"
 mkdocstrings = {version = "0.21.2", extras = ["python"]}