jms/serializer-bundle 3.1.0 requires jms/serializer ^2.0 conflict with minimum-stability

[PaddyLock]

I have latest installation of symfony 4.2 but I can't install jms serializer bundle without the following error

composer require jms/serializer-bundle
Using version ^3.1 for jms/serializer-bundle
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Installation request for jms/serializer-bundle ^3.1 -> satisfiable by jms/serializer-bundle[3.1.0].
    - jms/serializer-bundle 3.1.0 requires jms/serializer ^2.0 -> satisfiable by jms/serializer[2.0.0, 2.0.0-RC1, 2.0.0-beta1, 2.0.1, 2.0.2, 2.1.0, 2.1.x-dev] but these conflict with your requirements or minimum-stability.

[goetas]

is this the only message you are getting?

[PaddyLock]

My bad, seems to be working now. Not sure what I did wrong.