Spring Security 3.1

org.springframework.beans.factory.parsing.BeanDefinitionParsingException: Configuration problem: You cannot use a spring-security-2.0.xsd or spring-security-3.0.xsd schema with Spring Security 3.1. Please update your schema declarations to the 3.1 schema.

Todos os site que falam sobre Srping-Security que pesquiso, quando coloco em pratica me dá este erro, pois configuro o applicationContex.xml

<b:beans xmlns = http://www.springframework.org/schema/security
xmlns:xsi = http://www.w3.org/2001/XMLSchema-instance
xmlns:b = http://www.springframework.org/schema/beans
xsi:schemaLocation=http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/security
http://www.springframework.org/schema/security/spring-security-3.0.xsd>
<b:beans>