Consider updating dataclasses-json package

[miketheman]

Today I tried installing gql-next for a new project, and using pipenv install --dev gql-next produced the following incompatibility message (collapsed since it's long):

$ pipenv install --dev gql-next
Installing gql-next…
Adding gql-next to Pipfile's [dev-packages]…
✔ Installation Succeeded
Pipfile.lock not found, creating…
Locking [dev-packages] dependencies…
✘ Locking Failed!
[pipenv.exceptions.ResolutionFailure]:       req_dir=requirements_dir
[pipenv.exceptions.ResolutionFailure]:   File "/usr/local/lib/python3.7/site-packages/pipenv/utils.py", line 726, in resolve_deps
[pipenv.exceptions.ResolutionFailure]:       req_dir=req_dir,
[pipenv.exceptions.ResolutionFailure]:   File "/usr/local/lib/python3.7/site-packages/pipenv/utils.py", line 480, in actually_resolve_deps
[pipenv.exceptions.ResolutionFailure]:       resolved_tree = resolver.resolve()
[pipenv.exceptions.ResolutionFailure]:   File "/usr/local/lib/python3.7/site-packages/pipenv/utils.py", line 395, in resolve
[pipenv.exceptions.ResolutionFailure]:       raise ResolutionFailure(message=str(e))
[pipenv.exceptions.ResolutionFailure]:       pipenv.exceptions.ResolutionFailure: ERROR: ERROR: Could not find a version that matches marshmallow==3.0.0rc6,>=2.0.0
[pipenv.exceptions.ResolutionFailure]:       Tried: 0.1.0, 0.1.0, 0.2.0, 0.2.0, 0.2.1, 0.2.1, 0.3.0, 0.3.0, 0.3.1, 0.3.1, 0.4.0, 0.4.0, 0.4.1, 0.4.1, 0.5.0, 0.5.0, 0.5.1, 0.5.1, 0.5.2, 0.5.2, 0.5.3, 0.5.3, 0.5.4, 0.5.4, 0.5.5, 0.5.5, 0.6.0, 0.6.0, 0.7.0, 0.7.0, 1.0.0, 1.0.0, 1.0.1, 1.0.1, 1.1.0, 1.1.0, 1.2.0, 1.2.0, 1.2.1, 1.2.1, 1.2.2, 1.2.2, 1.2.3, 1.2.3, 1.2.4, 1.2.4, 1.2.5, 1.2.5, 1.2.6, 1.2.6, 2.0.0, 2.0.0, 2.1.0, 2.1.0, 2.1.1, 2.1.1, 2.1.2, 2.1.2, 2.1.3, 2.1.3, 2.2.0, 2.2.0, 2.2.1, 2.2.1, 2.3.0, 2.3.0, 2.4.0, 2.4.0, 2.4.1, 2.4.1, 2.4.2, 2.4.2, 2.5.0, 2.5.0, 2.6.0, 2.6.0, 2.6.1, 2.6.1, 2.7.0, 2.7.0, 2.7.1, 2.7.2, 2.7.2, 2.7.3, 2.7.3, 2.8.0, 2.8.0, 2.9.0, 2.9.0, 2.9.1, 2.9.1, 2.10.0, 2.10.0, 2.10.1, 2.10.1, 2.10.2, 2.10.2, 2.10.3, 2.10.3, 2.10.4, 2.10.4, 2.10.5, 2.10.5, 2.11.0, 2.11.0, 2.11.1, 2.11.1, 2.12.0, 2.12.0, 2.12.1, 2.12.1, 2.12.2, 2.12.2, 2.13.0, 2.13.0, 2.13.1, 2.13.1, 2.13.2, 2.13.2, 2.13.3, 2.13.3, 2.13.4, 2.13.4, 2.13.5, 2.13.5, 2.13.6, 2.13.6, 2.14.0, 2.14.0, 2.15.0, 2.15.0, 2.15.1, 2.15.1, 2.15.2, 2.15.2, 2.15.3, 2.15.3, 2.15.4, 2.15.4, 2.15.5, 2.15.5, 2.15.6, 2.15.6, 2.16.0, 2.16.0, 2.16.1, 2.16.1, 2.16.2, 2.16.2, 2.16.3, 2.16.3, 2.17.0, 2.17.0, 2.18.0, 2.18.0, 2.18.1, 2.18.1, 2.19.0, 2.19.0, 2.19.1, 2.19.1, 2.19.2, 2.19.2, 2.19.3, 2.19.3, 2.19.4, 2.19.4, 2.19.5, 2.19.5, 2.20.0, 2.20.0, 2.20.1, 2.20.1, 2.20.2, 2.20.2, 2.20.3, 2.20.3, 2.20.4, 2.20.4, 2.20.5, 2.20.5, 3.0.0, 3.0.0, 3.0.1, 3.0.1, 3.0.2, 3.0.2, 3.0.3, 3.0.3, 3.0.4, 3.0.4, 3.0.5, 3.0.5, 3.1.0, 3.1.0, 3.1.1, 3.1.1, 3.2.0, 3.2.0
[pipenv.exceptions.ResolutionFailure]:       Skipped pre-versions: 1.0.0a0, 1.0.0a0, 2.0.0a1, 2.0.0a1, 2.0.0b1, 2.0.0b1, 2.0.0b2, 2.0.0b2, 2.0.0b3, 2.0.0b3, 2.0.0b4, 2.0.0b4, 2.0.0b5, 2.0.0b5, 2.0.0rc1, 2.0.0rc1, 2.0.0rc2, 2.0.0rc2, 3.0.0a1, 3.0.0a1, 3.0.0b1, 3.0.0b1, 3.0.0b2, 3.0.0b2, 3.0.0b3, 3.0.0b3, 3.0.0b4, 3.0.0b4, 3.0.0b5, 3.0.0b5, 3.0.0b6, 3.0.0b6, 3.0.0b7, 3.0.0b7, 3.0.0b8, 3.0.0b8, 3.0.0b9, 3.0.0b9, 3.0.0b10, 3.0.0b10, 3.0.0b11, 3.0.0b11, 3.0.0b12, 3.0.0b12, 3.0.0b13, 3.0.0b13, 3.0.0b14, 3.0.0b14, 3.0.0b15, 3.0.0b15, 3.0.0b16, 3.0.0b16, 3.0.0b17, 3.0.0b17, 3.0.0b18, 3.0.0b18, 3.0.0b19, 3.0.0b19, 3.0.0b20, 3.0.0b20, 3.0.0rc1, 3.0.0rc1, 3.0.0rc2, 3.0.0rc2, 3.0.0rc3, 3.0.0rc3, 3.0.0rc4, 3.0.0rc4, 3.0.0rc5, 3.0.0rc5, 3.0.0rc6, 3.0.0rc6, 3.0.0rc7, 3.0.0rc7, 3.0.0rc8, 3.0.0rc8, 3.0.0rc9, 3.0.0rc9
[pipenv.exceptions.ResolutionFailure]: Warning: Your dependencies could not be resolved. You likely have a mismatch in your sub-dependencies.
  First try clearing your dependency cache with $ pipenv lock --clear, then try the original command again.
 Alternatively, you can use $ pipenv install --skip-lock to bypass this mechanism, then run $ pipenv graph to inspect the situation.
  Hint: try $ pipenv lock --pre if it is a pre-release dependency.
ERROR: ERROR: Could not find a version that matches marshmallow==3.0.0rc6,>=2.0.0
Tried: 0.1.0, 0.1.0, 0.2.0, 0.2.0, 0.2.1, 0.2.1, 0.3.0, 0.3.0, 0.3.1, 0.3.1, 0.4.0, 0.4.0, 0.4.1, 0.4.1, 0.5.0, 0.5.0, 0.5.1, 0.5.1, 0.5.2, 0.5.2, 0.5.3, 0.5.3, 0.5.4, 0.5.4, 0.5.5, 0.5.5, 0.6.0, 0.6.0, 0.7.0, 0.7.0, 1.0.0, 1.0.0, 1.0.1, 1.0.1, 1.1.0, 1.1.0, 1.2.0, 1.2.0, 1.2.1, 1.2.1, 1.2.2, 1.2.2, 1.2.3, 1.2.3, 1.2.4, 1.2.4, 1.2.5, 1.2.5, 1.2.6, 1.2.6, 2.0.0, 2.0.0, 2.1.0, 2.1.0, 2.1.1, 2.1.1, 2.1.2, 2.1.2, 2.1.3, 2.1.3, 2.2.0, 2.2.0, 2.2.1, 2.2.1, 2.3.0, 2.3.0, 2.4.0, 2.4.0, 2.4.1, 2.4.1, 2.4.2, 2.4.2, 2.5.0, 2.5.0, 2.6.0, 2.6.0, 2.6.1, 2.6.1, 2.7.0, 2.7.0, 2.7.1, 2.7.2, 2.7.2, 2.7.3, 2.7.3, 2.8.0, 2.8.0, 2.9.0, 2.9.0, 2.9.1, 2.9.1, 2.10.0, 2.10.0, 2.10.1, 2.10.1, 2.10.2, 2.10.2, 2.10.3, 2.10.3, 2.10.4, 2.10.4, 2.10.5, 2.10.5, 2.11.0, 2.11.0, 2.11.1, 2.11.1, 2.12.0, 2.12.0, 2.12.1, 2.12.1, 2.12.2, 2.12.2, 2.13.0, 2.13.0, 2.13.1, 2.13.1, 2.13.2, 2.13.2, 2.13.3, 2.13.3, 2.13.4, 2.13.4, 2.13.5, 2.13.5, 2.13.6, 2.13.6, 2.14.0, 2.14.0, 2.15.0, 2.15.0, 2.15.1, 2.15.1, 2.15.2, 2.15.2, 2.15.3, 2.15.3, 2.15.4, 2.15.4, 2.15.5, 2.15.5, 2.15.6, 2.15.6, 2.16.0, 2.16.0, 2.16.1, 2.16.1, 2.16.2, 2.16.2, 2.16.3, 2.16.3, 2.17.0, 2.17.0, 2.18.0, 2.18.0, 2.18.1, 2.18.1, 2.19.0, 2.19.0, 2.19.1, 2.19.1, 2.19.2, 2.19.2, 2.19.3, 2.19.3, 2.19.4, 2.19.4, 2.19.5, 2.19.5, 2.20.0, 2.20.0, 2.20.1, 2.20.1, 2.20.2, 2.20.2, 2.20.3, 2.20.3, 2.20.4, 2.20.4, 2.20.5, 2.20.5, 3.0.0, 3.0.0, 3.0.1, 3.0.1, 3.0.2, 3.0.2, 3.0.3, 3.0.3, 3.0.4, 3.0.4, 3.0.5, 3.0.5, 3.1.0, 3.1.0, 3.1.1, 3.1.1, 3.2.0, 3.2.0
Skipped pre-versions: 1.0.0a0, 1.0.0a0, 2.0.0a1, 2.0.0a1, 2.0.0b1, 2.0.0b1, 2.0.0b2, 2.0.0b2, 2.0.0b3, 2.0.0b3, 2.0.0b4, 2.0.0b4, 2.0.0b5, 2.0.0b5, 2.0.0rc1, 2.0.0rc1, 2.0.0rc2, 2.0.0rc2, 3.0.0a1, 3.0.0a1, 3.0.0b1, 3.0.0b1, 3.0.0b2, 3.0.0b2, 3.0.0b3, 3.0.0b3, 3.0.0b4, 3.0.0b4, 3.0.0b5, 3.0.0b5, 3.0.0b6, 3.0.0b6, 3.0.0b7, 3.0.0b7, 3.0.0b8, 3.0.0b8, 3.0.0b9, 3.0.0b9, 3.0.0b10, 3.0.0b10, 3.0.0b11, 3.0.0b11, 3.0.0b12, 3.0.0b12, 3.0.0b13, 3.0.0b13, 3.0.0b14, 3.0.0b14, 3.0.0b15, 3.0.0b15, 3.0.0b16, 3.0.0b16, 3.0.0b17, 3.0.0b17, 3.0.0b18, 3.0.0b18, 3.0.0b19, 3.0.0b19, 3.0.0b20, 3.0.0b20, 3.0.0rc1, 3.0.0rc1, 3.0.0rc2, 3.0.0rc2, 3.0.0rc3, 3.0.0rc3, 3.0.0rc4, 3.0.0rc4, 3.0.0rc5, 3.0.0rc5, 3.0.0rc6, 3.0.0rc6, 3.0.0rc7, 3.0.0rc7, 3.0.0rc8, 3.0.0rc8, 3.0.0rc9, 3.0.0rc9
There are incompatible versions in the resolved dependencies.
[pipenv.exceptions.ResolutionFailure]:   File "/usr/local/lib/python3.7/site-packages/pipenv/utils.py", line 726, in resolve_deps
[pipenv.exceptions.ResolutionFailure]:       req_dir=req_dir,
[pipenv.exceptions.ResolutionFailure]:   File "/usr/local/lib/python3.7/site-packages/pipenv/utils.py", line 480, in actually_resolve_deps
[pipenv.exceptions.ResolutionFailure]:       resolved_tree = resolver.resolve()
[pipenv.exceptions.ResolutionFailure]:   File "/usr/local/lib/python3.7/site-packages/pipenv/utils.py", line 395, in resolve
[pipenv.exceptions.ResolutionFailure]:       raise ResolutionFailure(message=str(e))
[pipenv.exceptions.ResolutionFailure]:       pipenv.exceptions.ResolutionFailure: ERROR: ERROR: Could not find a version that matches marshmallow==3.0.0rc6,>=2.0.0
[pipenv.exceptions.ResolutionFailure]:       Tried: 0.1.0, 0.1.0, 0.2.0, 0.2.0, 0.2.1, 0.2.1, 0.3.0, 0.3.0, 0.3.1, 0.3.1, 0.4.0, 0.4.0, 0.4.1, 0.4.1, 0.5.0, 0.5.0, 0.5.1, 0.5.1, 0.5.2, 0.5.2, 0.5.3, 0.5.3, 0.5.4, 0.5.4, 0.5.5, 0.5.5, 0.6.0, 0.6.0, 0.7.0, 0.7.0, 1.0.0, 1.0.0, 1.0.1, 1.0.1, 1.1.0, 1.1.0, 1.2.0, 1.2.0, 1.2.1, 1.2.1, 1.2.2, 1.2.2, 1.2.3, 1.2.3, 1.2.4, 1.2.4, 1.2.5, 1.2.5, 1.2.6, 1.2.6, 2.0.0, 2.0.0, 2.1.0, 2.1.0, 2.1.1, 2.1.1, 2.1.2, 2.1.2, 2.1.3, 2.1.3, 2.2.0, 2.2.0, 2.2.1, 2.2.1, 2.3.0, 2.3.0, 2.4.0, 2.4.0, 2.4.1, 2.4.1, 2.4.2, 2.4.2, 2.5.0, 2.5.0, 2.6.0, 2.6.0, 2.6.1, 2.6.1, 2.7.0, 2.7.0, 2.7.1, 2.7.2, 2.7.2, 2.7.3, 2.7.3, 2.8.0, 2.8.0, 2.9.0, 2.9.0, 2.9.1, 2.9.1, 2.10.0, 2.10.0, 2.10.1, 2.10.1, 2.10.2, 2.10.2, 2.10.3, 2.10.3, 2.10.4, 2.10.4, 2.10.5, 2.10.5, 2.11.0, 2.11.0, 2.11.1, 2.11.1, 2.12.0, 2.12.0, 2.12.1, 2.12.1, 2.12.2, 2.12.2, 2.13.0, 2.13.0, 2.13.1, 2.13.1, 2.13.2, 2.13.2, 2.13.3, 2.13.3, 2.13.4, 2.13.4, 2.13.5, 2.13.5, 2.13.6, 2.13.6, 2.14.0, 2.14.0, 2.15.0, 2.15.0, 2.15.1, 2.15.1, 2.15.2, 2.15.2, 2.15.3, 2.15.3, 2.15.4, 2.15.4, 2.15.5, 2.15.5, 2.15.6, 2.15.6, 2.16.0, 2.16.0, 2.16.1, 2.16.1, 2.16.2, 2.16.2, 2.16.3, 2.16.3, 2.17.0, 2.17.0, 2.18.0, 2.18.0, 2.18.1, 2.18.1, 2.19.0, 2.19.0, 2.19.1, 2.19.1, 2.19.2, 2.19.2, 2.19.3, 2.19.3, 2.19.4, 2.19.4, 2.19.5, 2.19.5, 2.20.0, 2.20.0, 2.20.1, 2.20.1, 2.20.2, 2.20.2, 2.20.3, 2.20.3, 2.20.4, 2.20.4, 2.20.5, 2.20.5, 3.0.0, 3.0.0, 3.0.1, 3.0.1, 3.0.2, 3.0.2, 3.0.3, 3.0.3, 3.0.4, 3.0.4, 3.0.5, 3.0.5, 3.1.0, 3.1.0, 3.1.1, 3.1.1, 3.2.0, 3.2.0
[pipenv.exceptions.ResolutionFailure]:       Skipped pre-versions: 1.0.0a0, 1.0.0a0, 2.0.0a1, 2.0.0a1, 2.0.0b1, 2.0.0b1, 2.0.0b2, 2.0.0b2, 2.0.0b3, 2.0.0b3, 2.0.0b4, 2.0.0b4, 2.0.0b5, 2.0.0b5, 2.0.0rc1, 2.0.0rc1, 2.0.0rc2, 2.0.0rc2, 3.0.0a1, 3.0.0a1, 3.0.0b1, 3.0.0b1, 3.0.0b2, 3.0.0b2, 3.0.0b3, 3.0.0b3, 3.0.0b4, 3.0.0b4, 3.0.0b5, 3.0.0b5, 3.0.0b6, 3.0.0b6, 3.0.0b7, 3.0.0b7, 3.0.0b8, 3.0.0b8, 3.0.0b9, 3.0.0b9, 3.0.0b10, 3.0.0b10, 3.0.0b11, 3.0.0b11, 3.0.0b12, 3.0.0b12, 3.0.0b13, 3.0.0b13, 3.0.0b14, 3.0.0b14, 3.0.0b15, 3.0.0b15, 3.0.0b16, 3.0.0b16, 3.0.0b17, 3.0.0b17, 3.0.0b18, 3.0.0b18, 3.0.0b19, 3.0.0b19, 3.0.0b20, 3.0.0b20, 3.0.0rc1, 3.0.0rc1, 3.0.0rc2, 3.0.0rc2, 3.0.0rc3, 3.0.0rc3, 3.0.0rc4, 3.0.0rc4, 3.0.0rc5, 3.0.0rc5, 3.0.0rc6, 3.0.0rc6, 3.0.0rc7, 3.0.0rc7, 3.0.0rc8, 3.0.0rc8, 3.0.0rc9, 3.0.0rc9
[pipenv.exceptions.ResolutionFailure]: Warning: Your dependencies could not be resolved. You likely have a mismatch in your sub-dependencies.
  First try clearing your dependency cache with $ pipenv lock --clear, then try the original command again.
 Alternatively, you can use $ pipenv install --skip-lock to bypass this mechanism, then run $ pipenv graph to inspect the situation.
  Hint: try $ pipenv lock --pre if it is a pre-release dependency.
ERROR: ERROR: Could not find a version that matches marshmallow==3.0.0rc6,>=2.0.0
Tried: 0.1.0, 0.1.0, 0.2.0, 0.2.0, 0.2.1, 0.2.1, 0.3.0, 0.3.0, 0.3.1, 0.3.1, 0.4.0, 0.4.0, 0.4.1, 0.4.1, 0.5.0, 0.5.0, 0.5.1, 0.5.1, 0.5.2, 0.5.2, 0.5.3, 0.5.3, 0.5.4, 0.5.4, 0.5.5, 0.5.5, 0.6.0, 0.6.0, 0.7.0, 0.7.0, 1.0.0, 1.0.0, 1.0.1, 1.0.1, 1.1.0, 1.1.0, 1.2.0, 1.2.0, 1.2.1, 1.2.1, 1.2.2, 1.2.2, 1.2.3, 1.2.3, 1.2.4, 1.2.4, 1.2.5, 1.2.5, 1.2.6, 1.2.6, 2.0.0, 2.0.0, 2.1.0, 2.1.0, 2.1.1, 2.1.1, 2.1.2, 2.1.2, 2.1.3, 2.1.3, 2.2.0, 2.2.0, 2.2.1, 2.2.1, 2.3.0, 2.3.0, 2.4.0, 2.4.0, 2.4.1, 2.4.1, 2.4.2, 2.4.2, 2.5.0, 2.5.0, 2.6.0, 2.6.0, 2.6.1, 2.6.1, 2.7.0, 2.7.0, 2.7.1, 2.7.2, 2.7.2, 2.7.3, 2.7.3, 2.8.0, 2.8.0, 2.9.0, 2.9.0, 2.9.1, 2.9.1, 2.10.0, 2.10.0, 2.10.1, 2.10.1, 2.10.2, 2.10.2, 2.10.3, 2.10.3, 2.10.4, 2.10.4, 2.10.5, 2.10.5, 2.11.0, 2.11.0, 2.11.1, 2.11.1, 2.12.0, 2.12.0, 2.12.1, 2.12.1, 2.12.2, 2.12.2, 2.13.0, 2.13.0, 2.13.1, 2.13.1, 2.13.2, 2.13.2, 2.13.3, 2.13.3, 2.13.4, 2.13.4, 2.13.5, 2.13.5, 2.13.6, 2.13.6, 2.14.0, 2.14.0, 2.15.0, 2.15.0, 2.15.1, 2.15.1, 2.15.2, 2.15.2, 2.15.3, 2.15.3, 2.15.4, 2.15.4, 2.15.5, 2.15.5, 2.15.6, 2.15.6, 2.16.0, 2.16.0, 2.16.1, 2.16.1, 2.16.2, 2.16.2, 2.16.3, 2.16.3, 2.17.0, 2.17.0, 2.18.0, 2.18.0, 2.18.1, 2.18.1, 2.19.0, 2.19.0, 2.19.1, 2.19.1, 2.19.2, 2.19.2, 2.19.3, 2.19.3, 2.19.4, 2.19.4, 2.19.5, 2.19.5, 2.20.0, 2.20.0, 2.20.1, 2.20.1, 2.20.2, 2.20.2, 2.20.3, 2.20.3, 2.20.4, 2.20.4, 2.20.5, 2.20.5, 3.0.0, 3.0.0, 3.0.1, 3.0.1, 3.0.2, 3.0.2, 3.0.3, 3.0.3, 3.0.4, 3.0.4, 3.0.5, 3.0.5, 3.1.0, 3.1.0, 3.1.1, 3.1.1, 3.2.0, 3.2.0
Skipped pre-versions: 1.0.0a0, 1.0.0a0, 2.0.0a1, 2.0.0a1, 2.0.0b1, 2.0.0b1, 2.0.0b2, 2.0.0b2, 2.0.0b3, 2.0.0b3, 2.0.0b4, 2.0.0b4, 2.0.0b5, 2.0.0b5, 2.0.0rc1, 2.0.0rc1, 2.0.0rc2, 2.0.0rc2, 3.0.0a1, 3.0.0a1, 3.0.0b1, 3.0.0b1, 3.0.0b2, 3.0.0b2, 3.0.0b3, 3.0.0b3, 3.0.0b4, 3.0.0b4, 3.0.0b5, 3.0.0b5, 3.0.0b6, 3.0.0b6, 3.0.0b7, 3.0.0b7, 3.0.0b8, 3.0.0b8, 3.0.0b9, 3.0.0b9, 3.0.0b10, 3.0.0b10, 3.0.0b11, 3.0.0b11, 3.0.0b12, 3.0.0b12, 3.0.0b13, 3.0.0b13, 3.0.0b14, 3.0.0b14, 3.0.0b15, 3.0.0b15, 3.0.0b16, 3.0.0b16, 3.0.0b17, 3.0.0b17, 3.0.0b18, 3.0.0b18, 3.0.0b19, 3.0.0b19, 3.0.0b20, 3.0.0b20, 3.0.0rc1, 3.0.0rc1, 3.0.0rc2, 3.0.0rc2, 3.0.0rc3, 3.0.0rc3, 3.0.0rc4, 3.0.0rc4, 3.0.0rc5, 3.0.0rc5, 3.0.0rc6, 3.0.0rc6, 3.0.0rc7, 3.0.0rc7, 3.0.0rc8, 3.0.0rc8, 3.0.0rc9, 3.0.0rc9
There are incompatible versions in the resolved dependencies.

I was able to successfully complete an install with pipenv install --dev --pre gql-next - but since gql-next isn't a prerelease package, it felt wrong.

I dug further into why the version of marshmallow was set to a prerelease in the dataclasses-json dependency that is used here.

$ pipenv graph
gql-next==0.1.1
  - click [required: >=7.0,<8.0, installed: 7.0]
  - dataclasses-json [required: >=0.2.0,<0.3.0, installed: 0.2.14]
    - marshmallow [required: ==3.0.0rc6, installed: 3.0.0rc6]    # <==== here it is
    - marshmallow-enum [required: >=1.4.1, installed: 1.5.1]
      - marshmallow [required: >=2.0.0, installed: 3.0.0rc6]
    - stringcase [required: ==1.2.0, installed: 1.2.0]
    - typing-inspect [required: >=0.4.0, installed: 0.4.0]
      - mypy-extensions [required: >=0.3.0, installed: 0.4.1]
  - graphql-core-next [required: >=1.0.0,<1.1.0, installed: 1.0.5]
  - inflection [required: >=0.3.1,<0.4.0, installed: 0.3.1]
  - jinja2 [required: >=2.10,<3.0, installed: 2.10.1]
    - MarkupSafe [required: >=0.23, installed: 1.1.1]
  - requests [required: >=2.21,<3.0, installed: 2.22.0]
    - certifi [required: >=2017.4.17, installed: 2019.9.11]
    - chardet [required: >=3.0.2,<3.1.0, installed: 3.0.4]
    - idna [required: >=2.5,<2.9, installed: 2.8]
    - urllib3 [required: >=1.21.1,<1.26,!=1.25.1,!=1.25.0, installed: 1.25.6]
  - watchdog [required: >=0.9.0,<0.10.0, installed: 0.9.0]
    - argh [required: >=0.24.1, installed: 0.26.2]
    - pathtools [required: >=0.1.1, installed: 0.1.2]
    - PyYAML [required: >=3.10, installed: 5.1.2]

Recently the dataclasses-json package upgraded their dependency on a stable version of marshmallow, would you consider a patch & release of dataclasses-json to ^0.3.3? https://github.com/graphql-python/gql-next/blob/5c81e58862c8df3a335b81bb2f77a0fab2c50570/pyproject.toml#L19