two dependencies with the same groupId and artifactId can not be released

I have pom which has something like

<dependency>
<groupId>de.tipitaka</groupId>
<artifactId>utils</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>de.tipitaka</groupId>
<artifactId>utils</artifactId>
<version>1.0-SNAPSHOT</version>
<classifier>sources</classifier>
</dependency>

and the maven-release-manager only increases the version at the first of these dependencies.

the attached patch against the trunk of maven-release-manager fixes the problem and works with my porject.