diff --git a/project_templates/square_pypi_package/example/pyproject.toml b/project_templates/square_pypi_package/example/pyproject.toml
index 86d5e8e6..149c7618 100644
--- a/project_templates/square_pypi_package/example/pyproject.toml
+++ b/project_templates/square_pypi_package/example/pyproject.toml
@@ -32,6 +32,7 @@ dev = [
     "pytest",
     "pytest-asyncio",
     "mypy",
+    "safir>=14.2.0",
     # Documentation
     "documenteer[guide]>=2,<3",
     "scriv",
diff --git a/project_templates/square_pypi_package/{{cookiecutter.name}}/pyproject.toml b/project_templates/square_pypi_package/{{cookiecutter.name}}/pyproject.toml
index 64cfd44a..64ab1dd5 100644
--- a/project_templates/square_pypi_package/{{cookiecutter.name}}/pyproject.toml
+++ b/project_templates/square_pypi_package/{{cookiecutter.name}}/pyproject.toml
@@ -32,6 +32,7 @@ dev = [
     "pytest",
     "pytest-asyncio",
     "mypy",
+    "safir>=14.2.0",
     # Documentation
     "documenteer[guide]>=2,<3",
     "scriv",