How to override the spring boot version used by jh

Question

my JHipster generated application uses

<jhipster-dependencies.version>2.0.28</jhipster-dependencies.version>

which includes Spring Boot v.2.0.6

But I want to use Spring Boot 2.1.1

What do I need to change in my pom.xml to achieve that. I tried to set <spring-boot.version>2.1.1.RELEASE</spring-boot.version>

But when I build & run, still v2.0.6 is used.