ElasticSearch.Net 6.8 referencing ElasticSearch.Net 7.0

Have ElasticSearch 6.4 repository. I attempt to connect with ElasticSearch.Net 6.8 and I receive this error:

System.IO.FileLoadException HResult=0x80131040 Message=Could not load file or assembly 'Elasticsearch.Net, Version=7.0.0.0, Culture=neutral, PublicKeyToken=96c599bbe3e70f5d' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) Source= StackTrace:

Inner Exception 1: FileLoadException: Could not load file or assembly 'Elasticsearch.Net, Version=6.0.0.0, Culture=neutral, PublicKeyToken=96c599bbe3e70f5d' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

I've tried every ElasticSearch.Net package available under 6.x

List<string> urlList = "myurl:9200"
List<Uri> uriList = new List<Uri>();
urlList.ForEach(s => uriList.Add(new Uri(s)));

var pool = new SniffingConnectionPool(uriList);
var settings = new ConnectionSettings(pool)
    .DefaultIndex("myInmdex");

eClient = new ElasticClient(settings);