diff --git a/develocity-conventions-gradle-plugin/src/test/java/io/spring/develocity/conventions/gradle/TestBuildScanConfiguration.java b/develocity-conventions-gradle-plugin/src/test/java/io/spring/develocity/conventions/gradle/TestBuildScanConfiguration.java
index 829fe52..307c8ea 100644
--- a/develocity-conventions-gradle-plugin/src/test/java/io/spring/develocity/conventions/gradle/TestBuildScanConfiguration.java
+++ b/develocity-conventions-gradle-plugin/src/test/java/io/spring/develocity/conventions/gradle/TestBuildScanConfiguration.java
@@ -38,7 +38,7 @@
  *
  * @author Andy Wilkinson
  */
-public final class TestBuildScanConfiguration implements BuildScanConfiguration {
+class TestBuildScanConfiguration implements BuildScanConfiguration {
 
 	final TestBuildScanDataObfuscation obfuscation = new TestBuildScanDataObfuscation();
 
diff --git a/develocity-conventions-gradle-plugin/src/test/java/io/spring/develocity/conventions/gradle/TestProcessRunner.java b/develocity-conventions-gradle-plugin/src/test/java/io/spring/develocity/conventions/gradle/TestProcessRunner.java
index cf2e6d5..38c491d 100644
--- a/develocity-conventions-gradle-plugin/src/test/java/io/spring/develocity/conventions/gradle/TestProcessRunner.java
+++ b/develocity-conventions-gradle-plugin/src/test/java/io/spring/develocity/conventions/gradle/TestProcessRunner.java
@@ -34,7 +34,7 @@
  *
  * @author Andy Wilkinson
  */
-final class TestProcessRunner implements ProcessRunner {
+class TestProcessRunner implements ProcessRunner {
 
 	final Map<List<String>, String> commandLineOutput = new HashMap<>();
 
diff --git a/develocity-conventions-gradle-plugin/src/test/java/io/spring/develocity/conventions/gradle/TestProperty.java b/develocity-conventions-gradle-plugin/src/test/java/io/spring/develocity/conventions/gradle/TestProperty.java
index e48a43b..23ada9d 100644
--- a/develocity-conventions-gradle-plugin/src/test/java/io/spring/develocity/conventions/gradle/TestProperty.java
+++ b/develocity-conventions-gradle-plugin/src/test/java/io/spring/develocity/conventions/gradle/TestProperty.java
@@ -26,7 +26,7 @@
  * @param <T> type of the value of the property
  * @author Andy Wilkinson
  */
-public class TestProperty<T> implements Property<T> {
+class TestProperty<T> implements Property<T> {
 
 	private T value;
 
diff --git a/develocity-conventions-maven-extension/src/main/java/io/spring/develocity/conventions/maven/ConventionsDevelocityListener.java b/develocity-conventions-maven-extension/src/main/java/io/spring/develocity/conventions/maven/ConventionsDevelocityListener.java
index 4575361..b17e552 100644
--- a/develocity-conventions-maven-extension/src/main/java/io/spring/develocity/conventions/maven/ConventionsDevelocityListener.java
+++ b/develocity-conventions-maven-extension/src/main/java/io/spring/develocity/conventions/maven/ConventionsDevelocityListener.java
@@ -31,7 +31,7 @@
  */
 @Component(role = DevelocityListener.class, hint = "convention-develocity-maven-extension",
 		description = "Develocity conventions Maven extension")
-public final class ConventionsDevelocityListener implements DevelocityListener {
+public class ConventionsDevelocityListener implements DevelocityListener {
 
 	@Override
 	public void configure(DevelocityApi develocity, MavenSession MavenSession) throws Exception {
diff --git a/develocity-conventions-maven-extension/src/main/java/io/spring/develocity/conventions/maven/MavenConfigurableBuildScan.java b/develocity-conventions-maven-extension/src/main/java/io/spring/develocity/conventions/maven/MavenConfigurableBuildScan.java
index ea736d9..678cd6b 100644
--- a/develocity-conventions-maven-extension/src/main/java/io/spring/develocity/conventions/maven/MavenConfigurableBuildScan.java
+++ b/develocity-conventions-maven-extension/src/main/java/io/spring/develocity/conventions/maven/MavenConfigurableBuildScan.java
@@ -25,6 +25,11 @@
 import com.gradle.develocity.agent.maven.api.scan.BuildScanPublishing.PublishingContext;
 import io.spring.develocity.conventions.core.ConfigurableBuildScan;
 
+/**
+ * {@link ConfigurableBuildScan} for Maven builds.
+ *
+ * @author Andy Wilkinson
+ */
 class MavenConfigurableBuildScan implements ConfigurableBuildScan {
 
 	private final BuildScanApi buildScan;
diff --git a/develocity-conventions-maven-extension/src/test/java/io/spring/develocity/conventions/maven/MavenConfigurableBuildScanTests.java b/develocity-conventions-maven-extension/src/test/java/io/spring/develocity/conventions/maven/MavenConfigurableBuildScanTests.java
index e5a387e..2be3e1b 100644
--- a/develocity-conventions-maven-extension/src/test/java/io/spring/develocity/conventions/maven/MavenConfigurableBuildScanTests.java
+++ b/develocity-conventions-maven-extension/src/test/java/io/spring/develocity/conventions/maven/MavenConfigurableBuildScanTests.java
@@ -49,7 +49,7 @@
  *
  * @author Andy Wilkinson
  */
-public class MavenConfigurableBuildScanTests {
+class MavenConfigurableBuildScanTests {
 
 	private final TestBuildScanApi buildScanApi = new TestBuildScanApi();