Bundler could not find compatible versions for gem "excon" for gem mandrill-api

Question

I'm getting this error when trying to install bundle. I have both versions '0.15.4' and '0.25.1' of gem excon in my gemset. How can I fix this?

Bundler could not find compatible versions for gem "excon":

In Gemfile: mandrill-api (>= 0) ruby depends on excon (~> 0.15.4) ruby

fog (~> 1.10.1) ruby depends on
  excon (0.25.1)

Answer 1

Given the age of this, I suspect you have likely found an answer. That said, I think if you update fog you should have better luck. Sorry for the difficulty.

Answer 2

I deleted my Gemfile.lock, if that doesn't work try running gem update excon and check that you have the version installed with gem list | grep excon for the correct version.