diff --git a/documentation/spring-boot-docs/src/docs/antora/modules/reference/pages/web/spring-security.adoc b/documentation/spring-boot-docs/src/docs/antora/modules/reference/pages/web/spring-security.adoc
index 0216cd13d34..ccbcc6c6a27 100644
--- a/documentation/spring-boot-docs/src/docs/antora/modules/reference/pages/web/spring-security.adoc
+++ b/documentation/spring-boot-docs/src/docs/antora/modules/reference/pages/web/spring-security.adoc
@@ -299,7 +299,11 @@ spring:
 ----
 
 Again, the same properties are applicable for both servlet and reactive applications.
-Alternatively, you can define your own javadoc:org.springframework.security.oauth2.server.resource.introspection.OpaqueTokenIntrospector[] bean for servlet applications or a javadoc:org.springframework.security.oauth2.server.resource.introspection.ReactiveOpaqueTokenIntrospector[] for reactive applications.
+
+The result is an auto-configured introspector. Either a javadoc:org.springframework.security.oauth2.server.resource.introspection.SpringOpaqueTokenIntrospector[] or, in a reactive application, a javadoc:org.springframework.security.oauth2.server.resource.introspection.SpringReactiveOpaqueTokenIntrospector[].
+These auto-configured introspectors can be customized using javadoc:org.springframework.boot.security.oauth2.server.resource.autoconfigure.SpringOpaqueTokenIntrospectorBuilderCustomizer[] and javadoc:org.springframework.boot.security.oauth2.server.resource.autoconfigure.reactive.SpringReactiveOpaqueTokenIntrospectorBuilderCustomizer[] beans respectively.
+
+To take complete control of the introspection, define your own javadoc:org.springframework.security.oauth2.server.resource.introspection.OpaqueTokenIntrospector[] or javadoc:org.springframework.security.oauth2.server.resource.introspection.ReactiveOpaqueTokenIntrospector[] bean.
 
 
 
diff --git a/module/spring-boot-security-oauth2-resource-server/src/main/java/org/springframework/boot/security/oauth2/server/resource/autoconfigure/SpringOpaqueTokenIntrospectorBuilderCustomizer.java b/module/spring-boot-security-oauth2-resource-server/src/main/java/org/springframework/boot/security/oauth2/server/resource/autoconfigure/SpringOpaqueTokenIntrospectorBuilderCustomizer.java
index 381e1e85a95..51796966efc 100644
--- a/module/spring-boot-security-oauth2-resource-server/src/main/java/org/springframework/boot/security/oauth2/server/resource/autoconfigure/SpringOpaqueTokenIntrospectorBuilderCustomizer.java
+++ b/module/spring-boot-security-oauth2-resource-server/src/main/java/org/springframework/boot/security/oauth2/server/resource/autoconfigure/SpringOpaqueTokenIntrospectorBuilderCustomizer.java
@@ -16,16 +16,16 @@
 
 package org.springframework.boot.security.oauth2.server.resource.autoconfigure;
 
-import org.springframework.security.oauth2.server.resource.introspection.OpaqueTokenIntrospector;
 import org.springframework.security.oauth2.server.resource.introspection.SpringOpaqueTokenIntrospector;
+import org.springframework.security.oauth2.server.resource.introspection.SpringOpaqueTokenIntrospector.Builder;
 
 /**
- * Callback interface for the customization of the
- * {@link SpringOpaqueTokenIntrospector.Builder} used to create the auto-configured
- * {@link OpaqueTokenIntrospector}.
+ * Callback interface for the customization of the {@link Builder
+ * SpringOpaqueTokenIntrospector.Builder} used to create the auto-configured
+ * {@link SpringOpaqueTokenIntrospector}.
  *
  * @author Vishnutheep B
- * @since 4.x.x
+ * @since 4.1.0
  */
 @FunctionalInterface
 public interface SpringOpaqueTokenIntrospectorBuilderCustomizer {
diff --git a/module/spring-boot-security-oauth2-resource-server/src/main/java/org/springframework/boot/security/oauth2/server/resource/autoconfigure/reactive/SpringReactiveOpaqueTokenIntrospectorBuilderCustomizer.java b/module/spring-boot-security-oauth2-resource-server/src/main/java/org/springframework/boot/security/oauth2/server/resource/autoconfigure/reactive/SpringReactiveOpaqueTokenIntrospectorBuilderCustomizer.java
index d09fc335d69..bed93dd0e9b 100644
--- a/module/spring-boot-security-oauth2-resource-server/src/main/java/org/springframework/boot/security/oauth2/server/resource/autoconfigure/reactive/SpringReactiveOpaqueTokenIntrospectorBuilderCustomizer.java
+++ b/module/spring-boot-security-oauth2-resource-server/src/main/java/org/springframework/boot/security/oauth2/server/resource/autoconfigure/reactive/SpringReactiveOpaqueTokenIntrospectorBuilderCustomizer.java
@@ -16,16 +16,16 @@
 
 package org.springframework.boot.security.oauth2.server.resource.autoconfigure.reactive;
 
-import org.springframework.security.oauth2.server.resource.introspection.ReactiveOpaqueTokenIntrospector;
 import org.springframework.security.oauth2.server.resource.introspection.SpringReactiveOpaqueTokenIntrospector;
+import org.springframework.security.oauth2.server.resource.introspection.SpringReactiveOpaqueTokenIntrospector.Builder;
 
 /**
- * Callback interface for the customization of the
- * {@link SpringReactiveOpaqueTokenIntrospector.Builder} used to create the
- * auto-configured {@link ReactiveOpaqueTokenIntrospector}.
+ * Callback interface for the customization of the {@link Builder
+ * SpringReactiveOpaqueTokenIntrospector.Builder} used to create the auto-configured
+ * {@link SpringReactiveOpaqueTokenIntrospector}.
  *
  * @author Vishnutheep B
- * @since 4.x.x
+ * @since 4.1.0
  */
 @FunctionalInterface
 public interface SpringReactiveOpaqueTokenIntrospectorBuilderCustomizer {