update

phoenix/deps/telemetry/mix.exs

@@ -0,0 +1,20 @@
+# This file is only used by Telemetry as a dependency.
+# Use rebar3 instead for compiling, running tests, etc.
+defmodule Telemetry.MixProject do
+  use Mix.Project
+
+  {:ok, [{:application, :telemetry, props}]} = :file.consult("src/telemetry.app.src")
+  @props Keyword.take(props, [:applications, :description, :env, :mod, :vsn])
+
+  def application do
+    @props
+  end
+
+  def project do
+    [
+      app: :telemetry,
+      version: to_string(application()[:vsn]),
+      language: :erlang
+    ]
+  end
+end