diff --git a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/cache/HazelcastJCacheCustomizationConfiguration.java b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/cache/HazelcastJCacheCustomizationConfiguration.java
index b36cbdf204..4168f217d7 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/cache/HazelcastJCacheCustomizationConfiguration.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/cache/HazelcastJCacheCustomizationConfiguration.java
@@ -43,8 +43,7 @@ class HazelcastJCacheCustomizationConfiguration {
 		return new HazelcastPropertiesCustomizer(hazelcastInstance.getIfUnique());
 	}
 
-	private static class HazelcastPropertiesCustomizer
-			implements JCachePropertiesCustomizer {
+	static class HazelcastPropertiesCustomizer implements JCachePropertiesCustomizer {
 
 		private final HazelcastInstance hazelcastInstance;
 
diff --git a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/reactive/WebFluxAutoConfiguration.java b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/reactive/WebFluxAutoConfiguration.java
index b37c11d3dc..bc8e2a38a5 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/reactive/WebFluxAutoConfiguration.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/reactive/WebFluxAutoConfiguration.java
@@ -292,7 +292,7 @@ public class WebFluxAutoConfiguration {
 
 	}
 
-	private static class ResourceChainResourceHandlerRegistrationCustomizer
+	static class ResourceChainResourceHandlerRegistrationCustomizer
 			implements ResourceHandlerRegistrationCustomizer {
 
 		@Autowired
diff --git a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration.java b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration.java
index 2683a7200c..19e8ecbc98 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration.java
@@ -598,7 +598,7 @@ public class WebMvcAutoConfiguration {
 
 	}
 
-	private static class ResourceChainResourceHandlerRegistrationCustomizer
+	static class ResourceChainResourceHandlerRegistrationCustomizer
 			implements ResourceHandlerRegistrationCustomizer {
 
 		@Autowired