gmaven-plugin works for groovy 1.7.5 but not for 2.1.0

I have working maven 2 setup which compiles jUnit tests written in groovy. Both java and groovy tests are located at /src/test/java

See a snapshot of the pom.xml

<plugin>
    <groupId>org.codehaus.gmaven</groupId>
    <artifactId>gmaven-plugin</artifactId>
    <version>1.3</version>
    <executions>
        <execution>
        <id>testCompile</id>
        <goals>
            <goal>testCompile</goal>
        </goals>
        <configuration>
            <sources>
                <fileset>
                    <directory>${pom.basedir}/src/test/java</directory>
                    <includes>
                        <include>**/*.groovy</include>
                    </includes>
                </fileset>
            </sources>
        </configuration>
        </execution>
    </executions>
</plugin>

<dependency>
    <groupId>org.codehaus.groovy</groupId>
    <artifactId>groovy</artifactId>
    <version>1.7.5</version>
    <scope>test</scope>
</dependency>

When I upgrade to plugin version 1.5 and groovy 2.1.0, */.groovy files are ignored. Has anybody met up with this problem?

Ok, this configuration works for maven 2.

<plugin>
    <groupId>org.codehaus.gmaven</groupId>
        <artifactId>gmaven-plugin</artifactId>
        <version>1.4</version>
        <configuration>
            <providerSelection>2.0</providerSelection>
            <sourceEncoding>UTF-8</sourceEncoding>
        </configuration>
        <executions>
            <execution>
                <goals>
                    <goal>testCompile</goal>
                </goals>
                <configuration>
                    <sources>
                        <fileset>
                            <directory>${pom.basedir}/src/test/java</directory>
                            <includes>
                                <include>**/*.groovy</include>
                            </includes>
                        </fileset>
                    </sources>
                </configuration>
            </execution>
        </executions>
</plugin>

<dependency>
    <groupId>org.codehaus.groovy</groupId>
    <artifactId>groovy</artifactId>
    <version>2.0.0</version>
    <scope>test</scope>
</dependency>