minecraft-kajetans-text-core-mod/src/main/resources/pack.mcmeta

{
    "pack": {
        "description": "ktcm resources",
        "pack_format": 5,
        "_comment": "A pack_format of 5 requires json lang files and some texture changes from 1.15. Note: we require v5 pack meta for all mods."
    }
}