diff --git a/config/config.exs b/config/config.exs
index f199263..305c695 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -1,4 +1,3 @@
 # This file is responsible for configuring your application
 # and its dependencies with the aid of the Mix.Config module.
 import Config
-
diff --git a/lib/mix/tasks/update_timezones_geojson.ex b/lib/mix/tasks/update_timezones_geojson.ex
index 8c66fae..de70de9 100644
--- a/lib/mix/tasks/update_timezones_geojson.ex
+++ b/lib/mix/tasks/update_timezones_geojson.ex
@@ -34,16 +34,17 @@ defmodule Mix.Tasks.TzWorld.Update do
 
       _other ->
         Mix.raise(
-        """
-        Invalid arguments found. `mix tz_world.update` accepts the following:
-          --include-oceans
-          --no-include-oceans (default)
-          --force
-          --no-force (default)
-          --trace
-          --no-trace (default)
-        """,
-        exit_status: 1)
+          """
+          Invalid arguments found. `mix tz_world.update` accepts the following:
+            --include-oceans
+            --no-include-oceans (default)
+            --force
+            --no-force (default)
+            --trace
+            --no-trace (default)
+          """,
+          exit_status: 1
+        )
     end
   end
 
diff --git a/lib/tz_world.ex b/lib/tz_world.ex
index d51b0b4..36e48ca 100644
--- a/lib/tz_world.ex
+++ b/lib/tz_world.ex
@@ -13,7 +13,7 @@ defmodule TzWorld do
     TzWorld.Backend.Dets,
     TzWorld.Backend.DetsWithIndexCache,
     TzWorld.Backend.Ets,
-    TzWorld.Backend.EtsWithIndexCache,
+    TzWorld.Backend.EtsWithIndexCache
   ]
 
   @doc """
@@ -99,7 +99,7 @@ defmodule TzWorld do
 
   """
   @spec timezone_at(Geo.Point.t(), backend) ::
-    {:ok, String.t()} | {:error, atom}
+          {:ok, String.t()} | {:error, atom}
 
   def timezone_at(point, backend \\ fetch_backend())
 
@@ -108,7 +108,7 @@ defmodule TzWorld do
   end
 
   @spec timezone_at(Geo.PointZ.t(), backend) ::
-    {:ok, String.t()} | {:error, atom}
+          {:ok, String.t()} | {:error, atom}
 
   def timezone_at(%PointZ{coordinates: {lng, lat, _alt}}, backend) when is_atom(backend) do
     point = %Point{coordinates: {lng, lat}}
@@ -116,7 +116,7 @@ defmodule TzWorld do
   end
 
   @spec timezone_at({lng :: number, lat :: number}, backend) ::
-    {:ok, String.t()} | {:error, atom}
+          {:ok, String.t()} | {:error, atom}
 
   def timezone_at({lng, lat}, backend) when is_lng(lng) and is_lat(lat) do
     point = %Geo.Point{coordinates: {lng, lat}}
@@ -171,7 +171,7 @@ defmodule TzWorld do
 
   """
   @spec all_timezones_at(Geo.Point.t(), backend) ::
-    {:ok, [String.t()]}
+          {:ok, [String.t()]}
 
   def all_timezones_at(point, backend \\ fetch_backend())
 
@@ -180,7 +180,7 @@ defmodule TzWorld do
   end
 
   @spec all_timezones_at(Geo.PointZ.t(), backend) ::
-    {:ok, [String.t()]}
+          {:ok, [String.t()]}
 
   def all_timezones_at(%PointZ{coordinates: {lng, lat, _alt}}, backend) when is_atom(backend) do
     point = %Point{coordinates: {lng, lat}}
@@ -188,7 +188,7 @@ defmodule TzWorld do
   end
 
   @spec all_timezones_at({lng :: number, lat :: number}, backend) ::
-    {:ok, [String.t()]}
+          {:ok, [String.t()]}
 
   def all_timezones_at({lng, lat}, backend) when is_lng(lng) and is_lat(lat) do
     point = %Geo.Point{coordinates: {lng, lat}}
@@ -246,9 +246,10 @@ defmodule TzWorld do
       |> Enum.reject(&is_nil/1)
 
     Enum.find(backends, &Process.whereis/1) ||
-      raise(RuntimeError,
+      raise(
+        RuntimeError,
         "No TzWorld backend appears to be running. " <>
-        "please add one of #{inspect backends} to your supervision tree"
+          "please add one of #{inspect(backends)} to your supervision tree"
       )
   end
 
diff --git a/lib/tz_world/backend.ex b/lib/tz_world/backend.ex
index 360b7fb..b247211 100644
--- a/lib/tz_world/backend.ex
+++ b/lib/tz_world/backend.ex
@@ -27,5 +27,4 @@ defmodule TzWorld.Backend do
   Reloads the (potentially updated) timezone data
   """
   @callback reload_timezone_data :: {:ok, term}
-
 end
diff --git a/lib/tz_world/backend/dets.ex b/lib/tz_world/backend/dets.ex
index 9592a7c..07eaceb 100644
--- a/lib/tz_world/backend/dets.ex
+++ b/lib/tz_world/backend/dets.ex
@@ -56,12 +56,14 @@ defmodule TzWorld.Backend.Dets do
   @doc false
   def handle_continue(:open_dets_file, _state) do
     case get_geodata_table() do
-     {:error, {:file_error, _, :enoent}} ->
-       {:noreply, {:error, :enoent}}
-     {:error, {:not_closed, _path}} ->
-       raise "NOT CLOSED"
-     {:ok, __MODULE__} ->
-       {:noreply, {:ok, __MODULE__}}
+      {:error, {:file_error, _, :enoent}} ->
+        {:noreply, {:error, :enoent}}
+
+      {:error, {:not_closed, _path}} ->
+        raise "NOT CLOSED"
+
+      {:ok, __MODULE__} ->
+        {:noreply, {:ok, __MODULE__}}
     end
   end
 
@@ -112,7 +114,7 @@ defmodule TzWorld.Backend.Dets do
     point
     |> select_candidates()
     |> Enum.filter(&TzWorld.contains?(&1, point))
-    |> Enum.map(&(&1.properties.tzid))
+    |> Enum.map(& &1.properties.tzid)
     |> wrap(:ok)
   end
 
@@ -200,5 +202,4 @@ defmodule TzWorld.Backend.Dets do
   defp dets_options do
     [file: filename(), access: :read, estimated_no_objects: @slots]
   end
-
 end
diff --git a/lib/tz_world/backend/dets_with_index_cache.ex b/lib/tz_world/backend/dets_with_index_cache.ex
index 3d9a80c..7d2ed3e 100644
--- a/lib/tz_world/backend/dets_with_index_cache.ex
+++ b/lib/tz_world/backend/dets_with_index_cache.ex
@@ -100,10 +100,11 @@ defmodule TzWorld.Backend.DetsWithIndexCache do
   @doc false
   def handle_continue(:open_dets_file, _state) do
     case get_geodata_table() do
-     {:error, {:file_error, _, :enoent}} ->
-       {:noreply, {:error, :enoent}}
-     {:ok, __MODULE__} ->
-       {:noreply, get_index_cache()}
+      {:error, {:file_error, _, :enoent}} ->
+        {:noreply, {:error, :enoent}}
+
+      {:ok, __MODULE__} ->
+        {:noreply, get_index_cache()}
     end
   end
 
@@ -162,7 +163,7 @@ defmodule TzWorld.Backend.DetsWithIndexCache do
     point
     |> select_candidates(state)
     |> Enum.filter(&TzWorld.contains?(&1, point))
-    |> Enum.map(&(&1.properties.tzid))
+    |> Enum.map(& &1.properties.tzid)
     |> wrap(:ok)
   end
 
diff --git a/lib/tz_world/backend/ets.ex b/lib/tz_world/backend/ets.ex
index bf37a30..e651a57 100644
--- a/lib/tz_world/backend/ets.ex
+++ b/lib/tz_world/backend/ets.ex
@@ -94,7 +94,7 @@ defmodule TzWorld.Backend.Ets do
     point
     |> select_candidates()
     |> Enum.filter(&TzWorld.contains?(&1, point))
-    |> Enum.map(&(&1.properties.tzid))
+    |> Enum.map(& &1.properties.tzid)
     |> wrap(:ok)
   end
 
@@ -112,5 +112,4 @@ defmodule TzWorld.Backend.Ets do
       nil -> {:error, :time_zone_not_found}
     end
   end
-
 end
diff --git a/lib/tz_world/backend/ets_with_index_cache.ex b/lib/tz_world/backend/ets_with_index_cache.ex
index 9fb1d58..a47e8cc 100644
--- a/lib/tz_world/backend/ets_with_index_cache.ex
+++ b/lib/tz_world/backend/ets_with_index_cache.ex
@@ -101,7 +101,7 @@ defmodule TzWorld.Backend.EtsWithIndexCache do
     point
     |> select_candidates(state)
     |> Enum.filter(&TzWorld.contains?(&1, point))
-    |> Enum.map(&(&1.properties.tzid))
+    |> Enum.map(& &1.properties.tzid)
     |> wrap(:ok)
   end
 
diff --git a/lib/tz_world/backend/memory.ex b/lib/tz_world/backend/memory.ex
index 4c34055..b061813 100644
--- a/lib/tz_world/backend/memory.ex
+++ b/lib/tz_world/backend/memory.ex
@@ -96,7 +96,7 @@ defmodule TzWorld.Backend.Memory do
         tz_data
         |> Enum.filter(&TzWorld.contains?(&1.properties.bounding_box, point))
         |> Enum.filter(&TzWorld.contains?(&1, point))
-        |> Enum.map(&(&1.properties.tzid))
+        |> Enum.map(& &1.properties.tzid)
         |> wrap(:ok)
       end
 
diff --git a/lib/tz_world/downloader.ex b/lib/tz_world/downloader.ex
index 1d65b40..f05cde7 100644
--- a/lib/tz_world/downloader.ex
+++ b/lib/tz_world/downloader.ex
@@ -94,7 +94,6 @@ defmodule TzWorld.Downloader do
       {:error, :enoent} ->
         {latest_release, asset_url} = latest_release(include_oceans?)
         get_and_load_latest_release(latest_release, asset_url)
-
     end
   end
 
@@ -119,10 +118,13 @@ defmodule TzWorld.Downloader do
   defp get_releases(trace?) do
     with {:ok, json} <- get_url(@release_url),
          {:ok, releases} <- Jason.decode(json) do
-      maybe_log("Retrieved list of #{Enum.count(releases)} available timezone data releases.", trace?)
+      maybe_log(
+        "Retrieved list of #{Enum.count(releases)} available timezone data releases.",
+        trace?
+      )
+
       {:ok, releases}
     end
-
   end
 
   def get_url(url) do
@@ -159,12 +161,12 @@ defmodule TzWorld.Downloader do
 
   * `:timeout` is the number of milliseconds available
     for the request to complete. The default is
-    #{inspect @tzworld_default_timeout}. This option may also be
+    #{inspect(@tzworld_default_timeout)}. This option may also be
     set with the `CLDR_HTTP_TIMEOUT` environment variable.
 
   * `:connection_timeout` is the number of milliseconds
     available for the a connection to be estabklished to
-    the remote host. The default is #{inspect @tzworld_default_connection_timeout}.
+    the remote host. The default is #{inspect(@tzworld_default_connection_timeout)}.
     This option may also be set with the
     `CLDR_HTTP_CONNECTION_TIMEOUT` environment variable.
 
@@ -233,8 +235,8 @@ defmodule TzWorld.Downloader do
   ```
 
   """
-  @spec get(String.t | {String.t, list()}, options :: Keyword.t) ::
-    {:ok, binary} | {:not_modified, any()} | {:error, any}
+  @spec get(String.t() | {String.t(), list()}, options :: Keyword.t()) ::
+          {:ok, binary} | {:not_modified, any()} | {:error, any}
 
   def get(url, options \\ [])
 
@@ -245,7 +247,8 @@ defmodule TzWorld.Downloader do
     end
   end
 
-  def get({url, headers}, options) when is_binary(url) and is_list(headers) and is_list(options) do
+  def get({url, headers}, options)
+      when is_binary(url) and is_list(headers) and is_list(options) do
     case get_with_headers({url, headers}, options) do
       {:ok, _headers, body} -> {:ok, body}
       other -> other
@@ -281,12 +284,12 @@ defmodule TzWorld.Downloader do
 
   * `:timeout` is the number of milliseconds available
     for the request to complete. The default is
-    #{inspect @tzworld_default_timeout}. This option may also be
+    #{inspect(@tzworld_default_timeout)}. This option may also be
     set with the `CLDR_HTTP_TIMEOUT` environment variable.
 
   * `:connection_timeout` is the number of milliseconds
     available for the a connection to be estabklished to
-    the remote host. The default is #{inspect @tzworld_default_connection_timeout}.
+    the remote host. The default is #{inspect(@tzworld_default_connection_timeout)}.
     This option may also be set with the
     `CLDR_HTTP_CONNECTION_TIMEOUT` environment variable.
 
@@ -371,8 +374,8 @@ defmodule TzWorld.Downloader do
   """
   @doc since: "2.21.0"
 
-  @spec get_with_headers(String.t | {String.t, list()}, options :: Keyword.t) ::
-    {:ok, list(), binary} | {:not_modified, any()} | {:error, any}
+  @spec get_with_headers(String.t() | {String.t(), list()}, options :: Keyword.t()) ::
+          {:ok, list(), binary} | {:not_modified, any()} | {:error, any}
 
   def get_with_headers(request, options \\ [])
 
@@ -380,7 +383,8 @@ defmodule TzWorld.Downloader do
     get_with_headers({url, []}, options)
   end
 
-  def get_with_headers({url, headers}, options) when is_binary(url) and is_list(headers) and is_list(options) do
+  def get_with_headers({url, headers}, options)
+      when is_binary(url) and is_list(headers) and is_list(options) do
     require Logger
 
     hostname = String.to_charlist(URI.parse(url).host)
@@ -392,8 +396,12 @@ defmodule TzWorld.Downloader do
       case URI.parse(https_proxy) do
         %{host: host, port: port} when is_binary(host) and is_integer(port) ->
           :httpc.set_options([{:https_proxy, {{String.to_charlist(host), port}, []}}])
+
         _other ->
-          Logger.bare_log(:warning, "https_proxy was set to an invalid value. Found #{inspect https_proxy}.")
+          Logger.bare_log(
+            :warning,
+            "https_proxy was set to an invalid value. Found #{inspect(https_proxy)}."
+          )
       end
     end
 
@@ -407,7 +415,7 @@ defmodule TzWorld.Downloader do
       {_, {{_version, code, message}, _headers, _body}} ->
         Logger.bare_log(
           :error,
-          "Failed to download #{inspect url}. " <>
+          "Failed to download #{inspect(url)}. " <>
             "HTTP Error: (#{code}) #{inspect(message)}"
         )
 
@@ -417,15 +425,15 @@ defmodule TzWorld.Downloader do
         if sys_message == :timeout do
           Logger.bare_log(
             :error,
-            "Timeout connecting to #{inspect(host)} to download #{inspect url}. " <>
-            "Connection time exceeded #{http_options[:connect_timeout]}ms."
+            "Timeout connecting to #{inspect(host)} to download #{inspect(url)}. " <>
+              "Connection time exceeded #{http_options[:connect_timeout]}ms."
           )
 
           {:error, :connection_timeout}
         else
           Logger.bare_log(
             :error,
-            "Failed to connect to #{inspect(host)} to download #{inspect url}"
+            "Failed to connect to #{inspect(host)} to download #{inspect(url)}"
           )
 
           {:error, sys_message}
@@ -434,7 +442,7 @@ defmodule TzWorld.Downloader do
       {:error, {other}} ->
         Logger.bare_log(
           :error,
-          "Failed to download #{inspect url}. Error #{inspect other}"
+          "Failed to download #{inspect(url)}. Error #{inspect(other)}"
         )
 
         {:error, other}
@@ -442,9 +450,10 @@ defmodule TzWorld.Downloader do
       {:error, :timeout} ->
         Logger.bare_log(
           :error,
-          "Timeout downloading from #{inspect url}. " <>
-          "Request exceeded #{http_options[:timeout]}ms."
+          "Timeout downloading from #{inspect(url)}. " <>
+            "Request exceeded #{http_options[:timeout]}ms."
         )
+
         {:error, :timeout}
     end
   end
@@ -578,7 +587,7 @@ defmodule TzWorld.Downloader do
         reuse_sessions: true,
         versions: protocol_versions(),
         ciphers: preferred_ciphers(),
-        versions: protocol_versions(),
+        versions: protocol_versions()
       ]
     end
   end
@@ -618,7 +627,7 @@ defmodule TzWorld.Downloader do
   defp preferred_eccs do
     # TLS curves: X25519, prime256v1, secp384r1
     preferred_eccs = [:secp256r1, :secp384r1]
-    :ssl.eccs() -- (:ssl.eccs() -- preferred_eccs)
+    :ssl.eccs() -- :ssl.eccs() -- preferred_eccs
   end
 
   defp secure_ssl? do
@@ -632,13 +641,12 @@ defmodule TzWorld.Downloader do
 
   defp https_proxy(options) do
     options[:https_proxy] ||
-    Application.get_env(:tz_world, :https_proxy) ||
-    System.get_env("HTTPS_PROXY") ||
-    System.get_env("https_proxy")
+      Application.get_env(:tz_world, :https_proxy) ||
+      System.get_env("HTTPS_PROXY") ||
+      System.get_env("https_proxy")
   end
 
   def otp_version do
-    :erlang.system_info(:otp_release) |> List.to_integer
+    :erlang.system_info(:otp_release) |> List.to_integer()
   end
-
 end
diff --git a/lib/tz_world/geo_data.ex b/lib/tz_world/geo_data.ex
index 0175792..d68f405 100644
--- a/lib/tz_world/geo_data.ex
+++ b/lib/tz_world/geo_data.ex
@@ -10,8 +10,8 @@ defmodule TzWorld.GeoData do
 
   def default_data_dir do
     TzWorld.app_name()
-    |> :code.priv_dir
-    |> List.to_string
+    |> :code.priv_dir()
+    |> List.to_string()
   end
 
   def data_dir do
@@ -47,7 +47,7 @@ defmodule TzWorld.GeoData do
 
   def transform_source_data(source_data, version) when is_list(source_data) do
     source_data
-    |> :erlang.list_to_binary
+    |> :erlang.list_to_binary()
     |> transform_source_data(version)
   end
 
@@ -59,7 +59,7 @@ defmodule TzWorld.GeoData do
         |> :erlang.term_to_binary()
 
       error ->
-        raise RuntimeError, "Unable to unzip downloaded data. Error: #{inspect error}"
+        raise RuntimeError, "Unable to unzip downloaded data. Error: #{inspect(error)}"
     end
   end
 
@@ -100,7 +100,6 @@ defmodule TzWorld.GeoData do
   defp calculate_bounding_box(
          %Geo.MultiPolygon{coordinates: polygons, properties: properties} = poly
        ) do
-
     bounding_boxes = Enum.map(polygons, &calculate_bounding_box/1)
     properties = Map.put(properties, :bounding_box, bounding_boxes)
 
diff --git a/test/tz_world_test.exs b/test/tz_world_test.exs
index 373c8a8..743ba63 100644
--- a/test/tz_world_test.exs
+++ b/test/tz_world_test.exs
@@ -2,8 +2,13 @@ defmodule TzWorldTest do
   use ExUnit.Case
   doctest TzWorld
 
-  @backends [TzWorld.Backend.Memory, TzWorld.Backend.Dets, TzWorld.Backend.Ets,
-    TzWorld.Backend.EtsWithIndexCache, TzWorld.Backend.DetsWithIndexCache]
+  @backends [
+    TzWorld.Backend.Memory,
+    TzWorld.Backend.Dets,
+    TzWorld.Backend.Ets,
+    TzWorld.Backend.EtsWithIndexCache,
+    TzWorld.Backend.DetsWithIndexCache
+  ]
 
   setup_all do
     for backend <- @backends do