Bionic distribution always loads as Xenial

I need to use Bionic in my build as a dependency library is too early a version in Xenial. Despite my config requesting dist: bionic the runtime environment is always Xenial.

See here for an example of this.

What do I need to change in my .travis.yml file to get Ubuntu 18.04 (Bionic) instead of 16.04 (Xenial)?

language: csharp
solution: lcmsNET.sln
mono: none
dist: bionic
before_install:
  - sudo apt-get update
  - sudo apt-get install -y liblcms2-2
dotnet: 2.1.811
script:
  - dotnet restore
  - dotnet test

Hi, @jrshoare!
Thanks for the information, should be fixed now!

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