Poetry pyproject.toml version dependency bug

pyproject.toml

[tool.poetry]
name = "django-ssl-auth"
version = "2.2.0"
description = "Django SSL Client Authentication"
authors = ["Kimmo Parviainen-Jalanko <kimvais@ssh.com>"]
maintainers = ["Joey Wilhelm <tarkatronic@gmail.com>"]
license = "MIT"
readme = "README.rst"
repository = "https://github.com/tarkatronic/django-ssl-auth/"
keywords = ["django", "authentication", "ssl"]
classifiers = [
    "Development Status :: 5 - Production/Stable",
    "Environment :: Web Environment",
    "Intended Audience :: Developers",
    "License :: OSI Approved :: MIT License",
    "Natural Language :: English",
    "Operating System :: OS Independent",
    "Programming Language :: Python",
    "Programming Language :: Python :: 2.7",
    "Programming Language :: Python :: 3",
    "Programming Language :: Python :: 3.5",
    "Programming Language :: Python :: 3.6",
    "Programming Language :: Python :: 3.7",
    "Programming Language :: Python :: 3.8",
    "Framework :: Django",
    "Framework :: Django :: 1.8",
    "Framework :: Django :: 1.9",
    "Framework :: Django :: 1.10",
    "Framework :: Django :: 1.11",
    "Framework :: Django :: 2.0",
    "Framework :: Django :: 2.1",
    "Framework :: Django :: 2.2",
    "Framework :: Django :: 3.0",
    "Topic :: Software Development :: Libraries :: Python Modules",
]

[tool.poetry.dependencies]
python = ">=2.7"
Django = [
    {version = "~1.8.19 || ~1.11.29", python = "~2.7"},
    {version = "~1.8.19 || ~1.11.29 || ~2.0.11 || ~2.1.15 || ~2.2.11", python = "~3.5"},
    {version = "~1.11.29 || ~2.0.11 || ~2.1.15 || ~2.2.11 || ~3.0.4", python = "~3.6"},
    {version = "~1.11.29 || ~2.0.11 || ~2.1.15 || ~2.2.11 || ~3.0.4", python = "~3.7"},
    {version = "~2.2.11 || ~3.0.4", python = "~3.8"}
]

[tool.poetry.dev-dependencies]

[build-system]
requires = ["poetry>=0.12"]
build-backend = "poetry.masonry.api"