diff --git a/CHANGELOG.md b/CHANGELOG.md
index 49e78c0..1e3523c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 ## Changelog
 
+## v0.3.1
+
+### Changes
+
+- Fix warnings on Elixir v1.11 about missing apps @josevalim (#152)
+
 ## v0.3.0 - 2020-07-14
 
 ### Changed
diff --git a/mix.exs b/mix.exs
index c53eff6..4c2105d 100644
--- a/mix.exs
+++ b/mix.exs
@@ -1,43 +1,50 @@
 defmodule PhoenixSwoosh.Mixfile do
   use Mix.Project
 
-  @version "0.3.0"
+  @version "0.3.1"
 
   def project do
-    [app: :phoenix_swoosh,
-     version: @version,
-     elixir: "~> 1.8",
-     compilers: compilers(Mix.env),
-     build_embedded: Mix.env == :prod,
-     start_permanent: Mix.env == :prod,
-     deps: deps(),
-
-     # Hex
-     description: description(),
-     package: package(),
-
-     # Docs
-     name: "Phoenix.Swoosh",
-     docs: [source_ref: "v#{@version}", main: "Phoenix.Swoosh",
-            canonical: "http://hexdocs.pm/phoenix_swoosh",
-            source_url: "https://github.com/swoosh/phoenix_swoosh"]]
+    [
+      app: :phoenix_swoosh,
+      version: @version,
+      elixir: "~> 1.8",
+      compilers: compilers(Mix.env()),
+      build_embedded: Mix.env() == :prod,
+      start_permanent: Mix.env() == :prod,
+      deps: deps(),
+
+      # Hex
+      description: description(),
+      package: package(),
+
+      # Docs
+      name: "Phoenix.Swoosh",
+      docs: [
+        source_ref: "v#{@version}",
+        main: "Phoenix.Swoosh",
+        canonical: "http://hexdocs.pm/phoenix_swoosh",
+        source_url: "https://github.com/swoosh/phoenix_swoosh"
+      ]
+    ]
   end
 
-  defp compilers(:test), do: [:phoenix] ++ Mix.compilers
-  defp compilers(_), do: Mix.compilers
+  defp compilers(:test), do: [:phoenix] ++ Mix.compilers()
+  defp compilers(_), do: Mix.compilers()
 
   def application do
     [extra_applications: [:logger]]
   end
 
   defp deps do
-    [{:swoosh, "~> 1.0"},
-     {:phoenix, "~> 1.4"},
-     {:phoenix_html, "~> 2.14"},
-     {:hackney, "~> 1.9"},
-     {:credo, "~> 1.0", only: [:dev, :test]},
-     {:ex_doc, "~> 0.22", only: :docs},
-     {:inch_ex, ">= 0.0.0", only: :docs}]
+    [
+      {:swoosh, "~> 1.0"},
+      {:phoenix, "~> 1.4"},
+      {:phoenix_html, "~> 2.14"},
+      {:hackney, "~> 1.9"},
+      {:credo, "~> 1.0", only: [:dev, :test]},
+      {:ex_doc, "~> 0.22", only: :docs},
+      {:inch_ex, ">= 0.0.0", only: :docs}
+    ]
   end
 
   defp description do
@@ -47,8 +54,10 @@ defmodule PhoenixSwoosh.Mixfile do
   end
 
   defp package do
-    [maintainers: ["Steve Domin", "Po Chen"],
-     licenses: ["MIT"],
-     links: %{"GitHub" => "https://github.com/swoosh/phoenix_swoosh"}]
+    [
+      maintainers: ["Steve Domin", "Po Chen"],
+      licenses: ["MIT"],
+      links: %{"GitHub" => "https://github.com/swoosh/phoenix_swoosh"}
+    ]
   end
 end