Looks like we are currently waiting on https://github.com/devunwired/apktools/pull/26 (by @giginet) to be merged in 😊 You should be able to add 👇 to your `Gemfile` to fix this: ```rb gem "apktools", git: "https://github.com/giginet/apktools.git", branch: "ruby-zip2" ``` Run `bundle update` and you should be good 🤞