diff --git a/TODO.md b/TODO.md
index 33f655a..816fc7d 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,6 +1,5 @@
 # TODO:
 
-- tests
 - add AGPL
 - add CI
 - add flake
diff --git a/{{ cookiecutter.project_slug }}/README.md b/{{ cookiecutter.project_slug }}/README.md
index 23d57dd..7a4eaf5 100644
--- a/{{ cookiecutter.project_slug }}/README.md	
+++ b/{{ cookiecutter.project_slug }}/README.md	
@@ -33,8 +33,9 @@ poetry install
 Tests are run using `pytest`:
 
 ```
-pytest
+poetry run pytest
 ```
+
 {% endif %}
 
 ## Author
diff --git a/{{ cookiecutter.project_slug }}/pyproject.toml b/{{ cookiecutter.project_slug }}/pyproject.toml
index 3c63433..fe42c60 100644
--- a/{{ cookiecutter.project_slug }}/pyproject.toml	
+++ b/{{ cookiecutter.project_slug }}/pyproject.toml	
@@ -17,6 +17,13 @@ python = "^3.10"
 [tool.poetry.scripts]
 {{ cookiecutter.project_slug }} = "{{ cookiecutter.project_slug }}.cli:main"
 
+[tool.poetry.group.dev.dependencies]
+pytest = "*"
+pytest-cov = "*"
+
+[tool.pytest.ini_options]
+addopts = "--cov"
+
 [build-system]
 requires = ["poetry-core"]
 build-backend = "poetry.core.masonry.api"
diff --git a/{{ cookiecutter.project_slug }}/tests/test_dummy.py b/{{ cookiecutter.project_slug }}/tests/test_dummy.py
new file mode 100644
index 0000000..35c1b8d
--- /dev/null
+++ b/{{ cookiecutter.project_slug }}/tests/test_dummy.py	
@@ -0,0 +1,4 @@
+import {{ cookiecutter.project_slug }}
+
+def test_dummy():
+    assert True
diff --git a/{{ cookiecutter.project_slug }}/{{ cookiecutter.project_slug }}/cli.py b/{{ cookiecutter.project_slug }}/{{ cookiecutter.project_slug }}/cli.py
index 7f605ce..090bab7 100644
--- a/{{ cookiecutter.project_slug }}/{{ cookiecutter.project_slug }}/cli.py	
+++ b/{{ cookiecutter.project_slug }}/{{ cookiecutter.project_slug }}/cli.py	
@@ -1,5 +1,6 @@
 import argparse
 
+
 def main():
     """ Console entrypoint for {{cookiecutter.project_slug}}."""
     parser = argparse.ArgumentParser()