The maven artifact org.wildfly:wildfly-spec-api references hibernate-jpa-2.0-api instead of hibernate-jpa-2.1-api which is currently available at https://repository.jboss.org/nexus/content/groups/public/org/hibernate/javax/persistence/hibernate-jpa-2.1-api/1.0.0.Draft-16/hibernate-jpa-2.1-api-1.0.0.Draft-16.jar