1. Update version number of clover-maven-plugin in your pom.xml
2. Update version number of clover dependency in your pom.xml (optional)
Your pom.xml may contain a dependency to Clover Core (org.openclover:clover). Update it's version number the same version as the clover-maven-plugin:
3. Delete existing coverage databases (optional)
Clover's database format may change in newer versions. In such case you may get a build error with a message informing about database incompatibility. In such case you have to delete old database files.
By default, databases are stored in module's /target directory; thanks to this incompatible databases are removed automatically upon 'mvn clean'.
Upgrading from specific releases
Please see the Clover Release Notes.