diff --git a/{{cookiecutter.project_slug}}/pyproject.toml b/{{cookiecutter.project_slug}}/pyproject.toml
index c965db6..cc9adf2 100644
--- a/{{cookiecutter.project_slug}}/pyproject.toml
+++ b/{{cookiecutter.project_slug}}/pyproject.toml
@@ -34,7 +34,7 @@ packages = [
 [tool.poetry.dependencies]
 python = ">=3.8.1, <4.0"
 
-[tool.poetry.dev-dependencies]
+[tool.poetry.group.dev.dependencies]
 mkdocstrings = {version = ">=0.23", extras = ["python"]}
 mkdocs-material = "*"
 mypy = "*"