First Check

• I added a very descriptive title to this issue.
• I used the GitHub search to find a similar issue and didn't find it.
• I searched the FastAPI documentation, with the integrated search.
• I already searched in Google "How to X in FastAPI" and didn't find any information.
• I already read and followed all the tutorial in the docs and didn't find an answer.
• I already checked if it is not related to FastAPI but to Pydantic.
• I already checked if it is not related to FastAPI but to Swagger UI.
• I already checked if it is not related to FastAPI but to ReDoc.

Commit to Help

• I commit to help with one of those options 👆

Example Code

fastapi>=0.85.1
starlette>=0.21.0

Description

these package versions have conflicting dependencies.
I want to use starlette=0.21.0.

Operating System

Linux

Operating System Details

No response

FastAPI Version

0.85.1

Python Version

python--3.9.7

Additional Context

No response