diff --git a/builder/src/main/java/net/kemitix/checkstyle/ruleset/builder/DefaultPackageScanner.java b/builder/src/main/java/net/kemitix/checkstyle/ruleset/builder/ClassGraphPackageScanner.java
similarity index 90%
rename from builder/src/main/java/net/kemitix/checkstyle/ruleset/builder/DefaultPackageScanner.java
rename to builder/src/main/java/net/kemitix/checkstyle/ruleset/builder/ClassGraphPackageScanner.java
index 232b08e..e014e85 100644
--- a/builder/src/main/java/net/kemitix/checkstyle/ruleset/builder/DefaultPackageScanner.java
+++ b/builder/src/main/java/net/kemitix/checkstyle/ruleset/builder/ClassGraphPackageScanner.java
@@ -28,12 +28,14 @@ import java.util.List;
 import java.util.stream.Collectors;
 
 /**
- * Default implementation of {@link PackageScanner}.
+ * Implementation of {@link PackageScanner} using ClassGraph.
+ *
+ * @see <a href="https://github.com/classgraph/classgraph/">ClassGraph</a>
  *
  * @author Paul Campbell (pcampbell@kemitix.net).
  */
 @Service
-public class DefaultPackageScanner implements PackageScanner {
+public class ClassGraphPackageScanner implements PackageScanner {
 
     @Override
     public final List<String> apply(final RuleSource ruleSource) {
diff --git a/builder/src/test/java/net/kemitix/checkstyle/ruleset/builder/DefaultPackageScannerTest.java b/builder/src/test/java/net/kemitix/checkstyle/ruleset/builder/ClassGraphPackageScannerTest.java
similarity index 83%
rename from builder/src/test/java/net/kemitix/checkstyle/ruleset/builder/DefaultPackageScannerTest.java
rename to builder/src/test/java/net/kemitix/checkstyle/ruleset/builder/ClassGraphPackageScannerTest.java
index 7b5a02e..c7ff4d8 100644
--- a/builder/src/test/java/net/kemitix/checkstyle/ruleset/builder/DefaultPackageScannerTest.java
+++ b/builder/src/test/java/net/kemitix/checkstyle/ruleset/builder/ClassGraphPackageScannerTest.java
@@ -3,18 +3,17 @@ package net.kemitix.checkstyle.ruleset.builder;
 import org.junit.Test;
 
 import java.util.List;
-import java.util.stream.Stream;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
 /**
- * Tests for {@link DefaultPackageScanner}.
+ * Tests for {@link ClassGraphPackageScanner}.
  *
  * @author Paul Campbell (pcampbell@kemitix.net)
  */
-public class DefaultPackageScannerTest {
+public class ClassGraphPackageScannerTest {
 
-    private PackageScanner scanner = new DefaultPackageScanner();
+    private PackageScanner scanner = new ClassGraphPackageScanner();
 
     @Test
     public void canScanCheckstylePackage() {