```ruby
default[:kerl][:releases] = %w(R14B02 R14B03 R14B04 R15B R15B01 R15B02 R15B03 R16A)
default[:kerl][:path]     = "/usr/local/bin/kerl"
```

Upgrade Erlang/OTP R16 to B
user
```ruby
default[:kerl][:releases] = %w(R14B02 R14B03 R14B04 R15B R15B01 R15B02 R15B03 R16B)
default[:kerl][:path]     = "/usr/local/bin/kerl"
```
assistant