Why does Gradle downgrade my transitive dependencies in a Grails 3.1 application?

Question

I am having a problem with a transitive dependency of my grails-flyway plugin. org.grails.plugins:grails-flyway:0.2.1 declares a dependency to

Answer 1

Goto your Gradle cache files folder:

cd ~/.gradle/caches/modules-2/files-2.1

search this version number:

grep -r "3.2.1" *

you will find out which pom file is using this version, usually it's something in spring-boot-dependencies-x.y.z.RELEASE.pom :

3.2.1
......
org.flywaydb
    flyway-core
    ${flyway.version}

which means, if you use spring-boot, it will overwrite some dependency version.

you can overwrite it again, by adding the following line in your gradle.properties file:

flyway.version=4.0.1

I encounter a similar problem and wasted several hours on it. So I left this information here, hope this could save your time if you get stuck into this problem