diff --git a/spring-web/src/main/java/org/springframework/http/client/observation/ClientHttpObservationDocumentation.java b/spring-web/src/main/java/org/springframework/http/client/observation/ClientHttpObservationDocumentation.java
index 6efcf48e2c5..2e68799526a 100644
--- a/spring-web/src/main/java/org/springframework/http/client/observation/ClientHttpObservationDocumentation.java
+++ b/spring-web/src/main/java/org/springframework/http/client/observation/ClientHttpObservationDocumentation.java
@@ -93,6 +93,7 @@ public enum ClientHttpObservationDocumentation implements ObservationDocumentati
 
 		/**
 		 * Client name derived from the request URI host.
+		 * @since 6.0.5
 		 */
 		CLIENT_NAME {
 			@Override
diff --git a/spring-webflux/src/main/java/org/springframework/web/reactive/function/client/ClientHttpObservationDocumentation.java b/spring-webflux/src/main/java/org/springframework/web/reactive/function/client/ClientHttpObservationDocumentation.java
index 6850e2a15cb..f50492e7709 100644
--- a/spring-webflux/src/main/java/org/springframework/web/reactive/function/client/ClientHttpObservationDocumentation.java
+++ b/spring-webflux/src/main/java/org/springframework/web/reactive/function/client/ClientHttpObservationDocumentation.java
@@ -89,6 +89,7 @@ public enum ClientHttpObservationDocumentation implements ObservationDocumentati
 
 		/**
 		 * Client name derived from the request URI host.
+		 * @since 6.0.5
 		 */
 		CLIENT_NAME {
 			@Override