diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/SpringApplication.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/SpringApplication.java
index 4de62683100..b8424d29d67 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/SpringApplication.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/SpringApplication.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -1274,6 +1274,7 @@ public class SpringApplication {
 	/**
 	 * Set the {@link ApplicationStartup} to use for collecting startup metrics.
 	 * @param applicationStartup the application startup to use
+	 * @since 2.4.0
 	 */
 	public void setApplicationStartup(ApplicationStartup applicationStartup) {
 		this.applicationStartup = (applicationStartup != null) ? applicationStartup : ApplicationStartup.DEFAULT;
@@ -1282,6 +1283,7 @@ public class SpringApplication {
 	/**
 	 * Returns the {@link ApplicationStartup} used for collecting startup metrics.
 	 * @return the application startup
+	 * @since 2.4.0
 	 */
 	public ApplicationStartup getApplicationStartup() {
 		return this.applicationStartup;
diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/origin/Origin.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/origin/Origin.java
index c4f719fe8d3..455638ed4d9 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/origin/Origin.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/origin/Origin.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -78,6 +78,7 @@ public interface Origin {
 	 * @param source the source object or {@code null}
 	 * @return a list of parents or an empty list if the source is {@code null}, has no
 	 * origin, or no parent
+	 * @since 2.4.0
 	 */
 	static List<Origin> parentsFrom(Object source) {
 		Origin origin = from(source);