In official podspec https://cocoapods.org/pods/SwiftPhoenixClient 5.3 is last one.
Updating local repo with 'pod repo update' wasn't helpful as well as 'pod install --repo-update'
it says
None of your spec sources contain a spec satisfying the dependency: SwiftPhoenixClient (= 5.3.1).
In official podspec https://cocoapods.org/pods/SwiftPhoenixClient 5.3 is last one. Updating local repo with 'pod repo update' wasn't helpful as well as 'pod install --repo-update' it says
None of your spec sources contain a spec satisfying the dependency:
SwiftPhoenixClient (= 5.3.1)
.