proguardVersion is ignored

[Bartimmermans]

I've upgraded my project from using proguard-maven-plugin 2.5.1 to 2.6.0 and left all of my configuration unchanged. One of my configuration options is 6.2.2. While previously, this actually made the plugin use Proguard 6.2.2, in the new plugin version, Proguard 7.2.2 is used, disregarding the proguardVersion configuration.

[INFO] --- proguard-maven-plugin:2.6.0:proguard (default) @ module ---
[INFO] Downloading from artifactory: .../com/guardsquare/proguard-base/7.2.2/proguard-base-7.2.2.pom
[INFO] Downloaded from artifactory: .../com/guardsquare/proguard-base/7.2.2/proguard-base-7.2.2.pom (2.9 kB at 40 kB/s)
[INFO] Downloading from artifactory: .../com/guardsquare/proguard-core/9.0.1/proguard-core-9.0.1.pom
[INFO] Downloaded from artifactory: .../com/guardsquare/proguard-core/9.0.1/proguard-core-9.0.1.pom (2.9 kB at 88 kB/s)
[INFO] Downloading ...
[INFO] --- ADD injars:...
[INFO] --- ADD ...
[INFO] execute ProGuard [-injars, '...']
[INFO] proguard jar: [/home/svc-gsp-svc-jenkins/.m2/repository/net/sf/proguard/proguard-base/6.2.2/proguard-base-6.2.2.jar]
[proguard] ProGuard, version 7.2.2
[proguard] Warning: com.luciad.gui.javafx.TLcdFXIcon: can't find superclass or interface javafx.scene.Group
[proguard] Warning ...

[Bartimmermans]

This is my plugin configuration

<plugin>
<groupId>com.github.wvengen</groupId>
<artifactId>proguard-maven-plugin</artifactId>
<version>2.6.0</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>proguard</goal>
</goals>
</execution>
</executions>
<configuration>
<proguardVersion>6.2.2</proguardVersion>
...
</configuration>
<dependencies>
<dependency>
<groupId>net.sf.proguard</groupId>
<artifactId>proguard-base</artifactId>
<version>6.2.2</version>
<scope>runtime</scope>
</dependency>
</dependencies>
</plugin>