diff --git a/mix.exs b/mix.exs
index b653b0c..d84083b 100644
--- a/mix.exs
+++ b/mix.exs
@@ -68,7 +68,7 @@ defmodule AuthPlug.MixProject do
       {:plug_cowboy, "~> 2.6.0", only: [:dev, :test]},
 
       # See: https://github.com/dwyl/useful
-      {:useful, "~> 1.12.0"},
+      {:useful, "~> 1.13.1"},
 
       # For publishing Hex.docs:
       {:ex_doc, "~> 0.30.1", only: :dev},
diff --git a/mix.lock b/mix.lock
index 66101be..ce605d1 100644
--- a/mix.lock
+++ b/mix.lock
@@ -40,7 +40,7 @@
   "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.7", "354c321cf377240c7b8716899e182ce4890c5938111a1296add3ec74cf1715df", [:make, :mix, :rebar3], [], "hexpm", "fe4c190e8f37401d30167c8c405eda19469f34577987c76dde613e838bbc67f8"},
   "telemetry": {:hex, :telemetry, "1.2.1", "68fdfe8d8f05a8428483a97d7aab2f268aaff24b49e0f599faa091f1d4e7f61c", [:rebar3], [], "hexpm", "dad9ce9d8effc621708f99eac538ef1cbe05d6a874dd741de2e689c47feafed5"},
   "unicode_util_compat": {:hex, :unicode_util_compat, "0.7.0", "bc84380c9ab48177092f43ac89e4dfa2c6d62b40b8bd132b1059ecc7232f9a78", [:rebar3], [], "hexpm", "25eee6d67df61960cf6a794239566599b09e17e668d3700247bc498638152521"},
-  "useful": {:hex, :useful, "1.12.1", "972d68f402226d3c82aa4496ac3977eee2a3f3f05bdc781e849e9941e5ac3b8d", [:mix], [{:plug, "~> 1.14", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "897554c252c765be2aaec9ba6bc7a77e6bc101a70b40cc1c09416a6be707f2cf"},
+  "useful": {:hex, :useful, "1.13.1", "308bd2b2eb674c7b955dad12830e8244febc0225bdf528d0364e6e6ca7c35907", [:mix], [{:plug, "~> 1.14", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "d6cfe674885ec9a9667698f3aa0ffd09de401d41ba80574562392e86de7427fe"},
   "websock": {:hex, :websock, "0.5.2", "b3c08511d8d79ed2c2f589ff430bd1fe799bb389686dafce86d28801783d8351", [:mix], [], "hexpm", "925f5de22fca6813dfa980fb62fd542ec43a2d1a1f83d2caec907483fe66ff05"},
   "websock_adapter": {:hex, :websock_adapter, "0.5.3", "4908718e42e4a548fc20e00e70848620a92f11f7a6add8cf0886c4232267498d", [:mix], [{:bandit, ">= 0.6.0", [hex: :bandit, repo: "hexpm", optional: true]}, {:plug, "~> 1.14", [hex: :plug, repo: "hexpm", optional: false]}, {:plug_cowboy, "~> 2.6", [hex: :plug_cowboy, repo: "hexpm", optional: true]}, {:websock, "~> 0.5", [hex: :websock, repo: "hexpm", optional: false]}], "hexpm", "cbe5b814c1f86b6ea002b52dd99f345aeecf1a1a6964e209d208fb404d930d3d"},
 }