升级到Rails 6.beta时解决gem依赖问题

Question

尝试在现有应用程序中试用Rails 6 beta。更新了Gemfile，使其包含gem 'rails', '6.0.0.beta3'

不幸的是，有些宝石，例如 active_model_serializers 依赖于版本“ <6”，并且在测试中没有可以找到的beta。

除了派生和制作自己的版本以外，还有其他解决方法吗？

$ bundle update

Bundler could not find compatible versions for gem "activemodel":
  In Gemfile:
    active_model_serializers (~> 0.10.7) was resolved to 0.10.9, which depends on
      activemodel (>= 4.1, < 6)

    clearance (= 1.17.0) was resolved to 1.17.0, which depends on
      activemodel (>= 3.1)

    clearance (= 1.17.0) was resolved to 1.17.0, which depends on
      email_validator (~> 1.4) was resolved to 1.6.0, which depends on
        activemodel

    rails (~> 6.0.0.beta3) was resolved to 6.0.0.beta3, which depends on
      activemodel (= 6.0.0.beta3)

    simple_form (~> 4.1) was resolved to 4.1.0, which depends on
      activemodel (>= 5.0)