diff --git a/.tool-versions b/.tool-versions
index 3a771604..f1edb14d 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1 +1 @@
-elixir 1.10.2
+elixir 1.10.3-otp-23
diff --git a/lib/pigeon/fcm/config.ex b/lib/pigeon/fcm/config.ex
index dcc94432..162377dc 100644
--- a/lib/pigeon/fcm/config.ex
+++ b/lib/pigeon/fcm/config.ex
@@ -180,8 +180,12 @@ defimpl Pigeon.Configurable, for: Pigeon.FCM.Config do
 
   def parse_error(data) do
     case Pigeon.json_library().decode(data) do
+      {:ok, %{"reason" => reason}} ->
+        reason |> Macro.underscore() |> String.to_existing_atom()
+
       {:ok, response} ->
-        response["reason"] |> Macro.underscore() |> String.to_existing_atom()
+        Logger.warn("error with no reason #{response["error"]}")
+        :unspecified_reason
 
       error ->
         "JSON parse failed: #{inspect(error)}, body: #{inspect(data)}"
diff --git a/mix.exs b/mix.exs
index 7032597b..54e81ffc 100644
--- a/mix.exs
+++ b/mix.exs
@@ -1,7 +1,7 @@
 defmodule Pigeon.Mixfile do
   use Mix.Project
 
-  @version "1.6.1"
+  @version "1.7.1"
 
   def project do
     [