diff --git a/pmd-java/pom.xml b/pmd-java/pom.xml
index 55ec0d612b..0e49fe404f 100644
--- a/pmd-java/pom.xml
+++ b/pmd-java/pom.xml
@@ -82,6 +82,17 @@
                             </sources>
                         </configuration>
                     </execution>
+                    <execution>
+                        <id>add-kotlin-test-sources</id>
+                        <goals>
+                            <goal>add-test-source</goal>
+                        </goals>
+                        <configuration>
+                            <sources>
+                                <source>${project.basedir}/src/test/kotlin</source>
+                            </sources>
+                        </configuration>
+                    </execution>
                 </executions>
             </plugin>