src/main/resources/pack.mcmeta
{
"pack": {
"description": "cheesecakecapes resources",
"pack_format": 3,
"_comment": "A pack_format of 3 should be used starting with Minecraft 1.11. All resources, including language files, should be lowercase (eg: en_us.lang). A pack_format of 2 will load your mod resources with LegacyV2Adapter, which requires language files to have uppercase letters (eg: en_US.lang)."
}
}