diff --git a/hibernate-core/src/main/java/org/hibernate/annotations/Struct.java b/hibernate-core/src/main/java/org/hibernate/annotations/Struct.java
index cec04a2567..a7266436cc 100644
--- a/hibernate-core/src/main/java/org/hibernate/annotations/Struct.java
+++ b/hibernate-core/src/main/java/org/hibernate/annotations/Struct.java
@@ -10,6 +10,8 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
+import org.hibernate.Incubating;
+
 import static java.lang.annotation.ElementType.FIELD;
 import static java.lang.annotation.ElementType.METHOD;
 import static java.lang.annotation.ElementType.TYPE;
@@ -37,6 +39,7 @@ import static java.lang.annotation.ElementType.TYPE;
  *
  * @since 6.2
  */
+@Incubating
 @Target({TYPE, FIELD, METHOD})
 @Retention( RetentionPolicy.RUNTIME )
 public @interface Struct {