overwrite nuget packages in feed on visual studio team services

while using

nuget.exe push \\share\Packages\*.nupkg -Source "https://myvsts.pkgs.visualstudio.com/_packaging/tcpcm/nuget/v3/index.json" -ApiKey VSTS

i got an

Response status code does not indicate success: 409 (Conflict).

error

is there a way to overwrite all packages that have already been uploaded?