diff --git a/spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/neo4j/Neo4jReactiveHealthIndicatorIntegrationTests.java b/spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/neo4j/Neo4jReactiveHealthIndicatorIntegrationTests.java
index 44e66cc10c9..c6cde3a2035 100644
--- a/spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/neo4j/Neo4jReactiveHealthIndicatorIntegrationTests.java
+++ b/spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/neo4j/Neo4jReactiveHealthIndicatorIntegrationTests.java
@@ -44,7 +44,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 @SpringBootTest
 @Testcontainers(disabledWithoutDocker = true)
-public class Neo4jReactiveHealthIndicatorIntegrationTests {
+class Neo4jReactiveHealthIndicatorIntegrationTests {
 
 	// gh-33428
 
diff --git a/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/elasticsearch/ElasticsearchClientAutoConfigurationTests.java b/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/elasticsearch/ElasticsearchClientAutoConfigurationTests.java
index c15a90c6e21..421e966fe2b 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/elasticsearch/ElasticsearchClientAutoConfigurationTests.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/elasticsearch/ElasticsearchClientAutoConfigurationTests.java
@@ -41,7 +41,7 @@ import static org.mockito.Mockito.mock;
  *
  * @author Andy Wilkinson
  */
-public class ElasticsearchClientAutoConfigurationTests {
+class ElasticsearchClientAutoConfigurationTests {
 
 	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
 			.withConfiguration(AutoConfigurations.of(ElasticsearchClientAutoConfiguration.class));
diff --git a/spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/graphql/GraphQlTestIntegrationTest.java b/spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/graphql/GraphQlTestIntegrationTest.java
index fe0cca64a24..95ab88d6419 100644
--- a/spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/graphql/GraphQlTestIntegrationTest.java
+++ b/spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/graphql/GraphQlTestIntegrationTest.java
@@ -27,7 +27,7 @@ import org.springframework.graphql.test.tester.GraphQlTester;
  * @author Brian Clozel
  */
 @GraphQlTest(BookController.class)
-public class GraphQlTestIntegrationTest {
+class GraphQlTestIntegrationTest {
 
 	@Autowired
 	private GraphQlTester graphQlTester;
diff --git a/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/info/OsInfoTests.java b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/info/OsInfoTests.java
index 14a3eaa96e7..e2de62a7741 100644
--- a/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/info/OsInfoTests.java
+++ b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/info/OsInfoTests.java
@@ -25,7 +25,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  *
  * @author Jonatan Ivanov
  */
-public class OsInfoTests {
+class OsInfoTests {
 
 	@Test
 	void osInfoIsAvailable() {
diff --git a/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/embedded/undertow/UndertowWebServerRuntimeHintsTests.java b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/embedded/undertow/UndertowWebServerRuntimeHintsTests.java
index f48502fcf06..f2ea77b0a3a 100644
--- a/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/embedded/undertow/UndertowWebServerRuntimeHintsTests.java
+++ b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/embedded/undertow/UndertowWebServerRuntimeHintsTests.java
@@ -32,7 +32,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  *
  * @author Andy Wilkinson
  */
-public class UndertowWebServerRuntimeHintsTests {
+class UndertowWebServerRuntimeHintsTests {
 
 	@Test
 	void registersHints() throws ClassNotFoundException {
diff --git a/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-jersey/src/test/java/smoketest/jersey/JerseyActuatorIsolatedObjectMapperFalseTests.java b/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-jersey/src/test/java/smoketest/jersey/JerseyActuatorIsolatedObjectMapperFalseTests.java
index e359fd94d23..466286e4ce0 100644
--- a/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-jersey/src/test/java/smoketest/jersey/JerseyActuatorIsolatedObjectMapperFalseTests.java
+++ b/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-jersey/src/test/java/smoketest/jersey/JerseyActuatorIsolatedObjectMapperFalseTests.java
@@ -39,7 +39,7 @@ import static org.assertj.core.api.Assertions.assertThat;
 @SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT,
 		properties = "management.endpoints.jackson.isolated-object-mapper=false")
 @ContextConfiguration(loader = ApplicationStartupSpringBootContextLoader.class)
-public class JerseyActuatorIsolatedObjectMapperFalseTests {
+class JerseyActuatorIsolatedObjectMapperFalseTests {
 
 	@LocalServerPort
 	private int port;
diff --git a/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-jersey/src/test/java/smoketest/jersey/JerseyActuatorIsolatedObjectMapperTrueTests.java b/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-jersey/src/test/java/smoketest/jersey/JerseyActuatorIsolatedObjectMapperTrueTests.java
index 57a084743e5..3028808f241 100644
--- a/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-jersey/src/test/java/smoketest/jersey/JerseyActuatorIsolatedObjectMapperTrueTests.java
+++ b/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-jersey/src/test/java/smoketest/jersey/JerseyActuatorIsolatedObjectMapperTrueTests.java
@@ -39,7 +39,7 @@ import static org.assertj.core.api.Assertions.assertThat;
 @SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT,
 		properties = "management.endpoints.jackson.isolated-object-mapper=true")
 @ContextConfiguration(loader = ApplicationStartupSpringBootContextLoader.class)
-public class JerseyActuatorIsolatedObjectMapperTrueTests {
+class JerseyActuatorIsolatedObjectMapperTrueTests {
 
 	@LocalServerPort
 	private int port;
diff --git a/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-session-mongo/src/test/java/smoketest/session/mongodb/SampleSessionMongoApplicationTests.java b/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-session-mongo/src/test/java/smoketest/session/mongodb/SampleSessionMongoApplicationTests.java
index 38bd1c6a01a..d0d52d25559 100644
--- a/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-session-mongo/src/test/java/smoketest/session/mongodb/SampleSessionMongoApplicationTests.java
+++ b/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-session-mongo/src/test/java/smoketest/session/mongodb/SampleSessionMongoApplicationTests.java
@@ -54,7 +54,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
 @Testcontainers(disabledWithoutDocker = true)
-public class SampleSessionMongoApplicationTests {
+class SampleSessionMongoApplicationTests {
 
 	@Autowired
 	private TestRestTemplate restTemplate;
diff --git a/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-session-redis/src/test/java/smoketest/session/redis/SampleSessionRedisApplicationTests.java b/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-session-redis/src/test/java/smoketest/session/redis/SampleSessionRedisApplicationTests.java
index 70115062576..a2f2c92b557 100644
--- a/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-session-redis/src/test/java/smoketest/session/redis/SampleSessionRedisApplicationTests.java
+++ b/spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-session-redis/src/test/java/smoketest/session/redis/SampleSessionRedisApplicationTests.java
@@ -51,7 +51,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  */
 @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
 @Testcontainers(disabledWithoutDocker = true)
-public class SampleSessionRedisApplicationTests {
+class SampleSessionRedisApplicationTests {
 
 	@Container
 	static RedisContainer redis = new RedisContainer();