diff --git a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/GraphQlProperties.java b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/GraphQlProperties.java
index 34f247ec752..74bdbe33a42 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/GraphQlProperties.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/GraphQlProperties.java
@@ -343,6 +343,7 @@ public class GraphQlProperties {
 
 	}
 
+	@Deprecated(since = "3.5.1", forRemoval = true)
 	public static final class DeprecatedSse {
 
 		private final Sse sse;