diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/rsocket/server/ConfigurableRSocketServerFactory.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/rsocket/server/ConfigurableRSocketServerFactory.java
index c825fafa1a..3f7d9b2c38 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/rsocket/server/ConfigurableRSocketServerFactory.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/rsocket/server/ConfigurableRSocketServerFactory.java
@@ -41,6 +41,7 @@ public interface ConfigurableRSocketServerFactory {
 	 * Specify the maximum transmission unit. Frames larger than the specified
 	 * {@code fragmentSize} are fragmented.
 	 * @param fragmentSize the fragment size
+	 * @since 2.4.0
 	 */
 	void setFragmentSize(DataSize fragmentSize);