diff --git a/.github/workflows/action.yml b/.github/workflows/action.yml
index 3294538..aa5fefd 100644
--- a/.github/workflows/action.yml
+++ b/.github/workflows/action.yml
@@ -21,10 +21,14 @@ jobs:
         run: poetry --help
       - name: Run poetry install
         run: poetry install
-      - name: Run tests
-        run: poetry run pytest tests
-      - name: Run black
-        run: poetry run black l9format/*.py tests/*.py --check
-      - name: Run poetry build
-        run: poetry build
+      - name: lint
+        run: poetry run ruff check .
+      - name: format check
+        run: poetry run black --check .
+      - name: sort-check
+        run: poetry run isort --check-only .
+      - name: test
+        run: poetry run pytest
+      - name: security-audit
+        run: poetry run pip-audit
 
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..dbbf7a8
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,27 @@
+# Makefile for pygins project
+
+.PHONY: test format sort lint security-check all
+
+# Run all quality checks
+all: test format sort lint security-check
+
+# Run tests using pytest
+test:
+	poetry run pytest
+
+# Format code using black
+format:
+	poetry run black .
+
+# Sort imports using isort
+sort:
+	poetry run isort .
+
+# Lint code using ruff
+lint:
+	poetry run ruff check .
+
+# Check for vulnerable dependencies using pip-audit
+security-check:
+	poetry run pip-audit
+
diff --git a/l9format/l9format.py b/l9format/l9format.py
index 1e0ff20..3cecca7 100644
--- a/l9format/l9format.py
+++ b/l9format/l9format.py
@@ -1,6 +1,8 @@
 import decimal
+
 from serde import Model, fields
 
+
 # Import from https://github.com/rossmacarthur/serde/commit/304884bca3c80e8b9a22a054b64dd94e3324b593#diff-dd2f65f16516311f0183377201a3d0b7894438787da732fc2bbc9c28cbde9fb8
 # A helper function...
 def round_decimal(
@@ -48,7 +50,7 @@ def deserialize(self, value) -> decimal.Decimal:
 
             return decimal.Decimal(value)
         except decimal.DecimalException:
-            raise ValidationError("invalid decimal", value=value)
+            raise Exception("invalid decimal", value=value)
 
 
 class L9HttpEvent(Model):
diff --git a/pyproject.toml b/pyproject.toml
index 8a1283c..6dae6c6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,10 +19,13 @@ python = "^3.9"
 # Bump up to python 3.11 fixes the issue as it seems fixed in the stdlib of 3.11
 serde = "^0.8.1"
 
-[tool.poetry.dev-dependencies]
-pytest = "*"
-black = "^22"
-mypy = "*"
+[tool.poetry.group.dev.dependencies]
+black = "^24.10.0"
+fire = "^0.7.0"
+isort = "^5.12.0"
+pip-audit = "^2.7.3"
+pytest = "^8.3.4"
+ruff = "^0.9.2"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]
diff --git a/tests/test_l9format.py b/tests/test_l9format.py
index 67c9762..443ba80 100644
--- a/tests/test_l9format.py
+++ b/tests/test_l9format.py
@@ -1,7 +1,8 @@
-from l9format import l9format
-from pathlib import Path
-import os
 import json
+import os
+from pathlib import Path
+
+from l9format import l9format
 
 TESTS_DIR = Path(os.path.dirname(__file__))