-If [available in Hex](https://hex.pm/docs/publish), the package can be installed
-by adding `prometheus_phx` to your list of dependencies in `mix.exs`:
+You can add PrometheusPhx as a dependency in your `mix.exs` file. In Phoenix 1.5 the telemetry instrumentation was changed and events have to be handled. This prevents libraries like `prometheus-phoenix` from working with newer versions of phoenix. So there are some minimum requirements. PrometheusPhx does require Elixir 1.7 or greater and Phoenix 1.5 or greater.