diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index df1f6a7ef..81f22ba8f 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -128,24 +128,29 @@ We recommend that your contribution complies with the following guidelines befor
   ```bash
   make check_lint
   ```
-  If you want to fix linting errors automatically, run
+- If you want to fix linting errors automatically, run
 
   ```bash
   make lint
   ```
 
-1. To run tests:
+- To run tests:
 
     ```bash
     make test
     ```
 
-6. To check code style:
+- To check code style:
 
     ```bash
-    make check_lint
+    make check_format
     ```
 
+- To fix code style automatically:
+
+    ```bash
+    make format
+    ```
 
 ## Overview of the MMM codebase
 
diff --git a/Makefile b/Makefile
index ce5b63ab3..6ddfc040f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,18 +1,28 @@
-.PHONY: init lint check_lint test html cleandocs run_notebooks
+.PHONY: init lint check_lint format check_format test html cleandocs run_notebooks uml
+
+PACKAGE_DIR = pymc_marketing
 
 init:
 	python3 -m pip install -e .
 
 lint:
 	pip install .[lint]
-	ruff . --fix
+	ruff check $(PACKAGE_DIR) --fix
 	mypy .
 
 check_lint:
 	pip install .[lint]
-	ruff .
+	ruff check $(PACKAGE_DIR)
 	mypy .
 
+format:
+	pip install .[lint]
+	ruff format $(PACKAGE_DIR)
+
+check_format:
+	pip install .[lint]
+	ruff format --check $(PACKAGE_DIR)
+
 test:
 	pip install .[test]
 	pytest