Image Maximum upload size exceeded

Hi 
I have a problem during file upload to the board
that File size is exceeded

Is there some way to upload a such image?
may be some additional parameter or something else?

curl --location 'https://api.miro.com/v2/boards/{boardId}/images' \
--header 'accept: application/json' \
--header 'authorization: Bearer token' \
--form 'resource=@"imageToUpload.png"'

{
    "status": 400,
    "code": "invalidParameters",
    "message": "Maximum upload size of 6000000 bytes exceeded",
    "type": "error"
}