Updating Request Headers in Django Middleware

Before I start complaining about my problem, I have to admit, that I'm not sure if my approach is the best way to handle my problem. I'm using Nuxt as my Frontend and I want to check/renew the JWT access token if it is expired, but the refresh token is still valid.

Hey, I'm currently trying to write a middleware in Django, which is responsible for updating the JWT access token. However, the test says that I'm not authorized, even though I've updated the header.

class JWTRefreshMiddleware:

    def __init__(self, get_response):
        self.get_response = get_response

    def __call__(self, request: HttpRequest):
        if request.headers.get("Authorization"):
            try:
                AccessToken(
                    str(request.headers.get("Authorization")).split(" ")[1], verify=True
                )
            except TokenError:
                if refresh_token_cookie := request.COOKIES.get("refresh_token"):
                    try:
                        refresh_token = RefreshToken(refresh_token_cookie, verify=True)
                        user = CustomUser.objects.get(
                            id=refresh_token.payload.get("user_id")
                        )
                        new_access_token = str(AccessToken.for_user(user))


                        request.META["HTTP_AUTHORIZATION"] = (
                            f"Bearer {new_access_token}"
                        )

                    except TokenError:
                        pass

        response: HttpResponse = self.get_response(request)

        return response

The endpoint which I'm trying to call looks like the following:

from ninja_jwt.authentication import JWTAuth

router = Router()

@router.get("/profile", response={200: UserProfileResponse}, auth=JWTAuth())
def get_user_profile(request):
    # Some Code

I've also tried to override request.headers["Authorization"], but...

TypeError: 'HttpHeaders' object does not support item assignment

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