升级Spring Cloud到Edgware.SR3报错?报错

本人将Spring Cloud升级到Edgware.SR3时报错，错误如下：

Error creating bean with name 'ribbonLoadBalancingHttpClient' defined in 
org.springframework.cloud.netflix.ribbon.apache.HttpClientRibbonConfiguration: Bean instantiation 
via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException:
 Failed to instantiate [org.springframework.cloud.netflix.ribbon.apache.RibbonLoadBalancingHttpClient]: Factory method 
'ribbonLoadBalancingHttpClient' threw exception; nested exception 
is java.lang.NoClassDefFoundError: rx/functions/Func1

说明：相同代码在Dalston.SR5下可以运行

希望有遇到类似问题的高手可以解答，感谢！！