Maven archiver uses unlocked snapshots in classpath, but copy-dependencies copy locked snapshots

I am trying to use the maven-jar-plugin and maven-dependency-plugin to create an runnable "bundle" of my application. It works fine in most cases, but when I have a snapshot in the dependency hierarchy, the copy-dependencies goals seems to translate the snapshot-dependencies into locked snapshots (snapshots with timestamp)

However, addClasspath from archiver-plugin does not translate snapshot dependencies:

• in lib, there is foolib-1.0.1-20130108.143522-8.jar
• the classpath contains lib/foolib-1.0.1-SNAPSHOT.jar

so I can't run the application.

I can't find a way to tell the copy-dependencies to not translate SNAPSHOTs or one to tell the archiver-plugin to translate SNAPSHOTs.

Here is the relevant snippet of the pom.xml:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>          
    <artifactId>maven-dependency-plugin</artifactId>           
    <version>2.5.1</version>                  
    <executions>
        <execution>
            <id>copy-libs</id>
            <phase>package</phase>    
            <goals>
                <goal>copy-dependencies</goal>                          
            </goals>
            <configuration>
                <excludeScope>provided</excludeScope>
                <outputDirectory>${package.dest}/lib</outputDirectory>
            </configuration>
        </execution>
    </executions>
</plugin>

<plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-jar-plugin</artifactId>
        <configuration>
        <outputDirectory>${package.dest}</outputDirectory>
        <archive>
            <manifest>
                <addClasspath>true</addClasspath>
                <classpathPrefix>lib/</