diff --git a/mix.exs b/mix.exs
index 0feecb4a..c846cd37 100644
--- a/mix.exs
+++ b/mix.exs
@@ -73,7 +73,7 @@ defmodule Concentrate.MixProject do
       {:httpoison, "~> 1.0"},
       {:hackney, "~> 1.23.0"},
       {:emqtt_failover, "~> 0.3"},
-      {:cowlib, "2.16.1", override: true},
+      {:cowlib, "2.18.0", override: true},
       {:jason, "~> 1.0"},
       {:stream_data, "~> 1.1", only: :test},
       {:tzdata, "~> 1.1.1"},
diff --git a/mix.lock b/mix.lock
index 60be6b09..50b2d574 100644
--- a/mix.lock
+++ b/mix.lock
@@ -6,7 +6,7 @@
   "certifi": {:hex, :certifi, "2.14.0", "ed3bef654e69cde5e6c022df8070a579a79e8ba2368a00acf3d75b82d9aceeed", [:rebar3], [], "hexpm", "ea59d87ef89da429b8e905264fdec3419f84f2215bb3d81e07a18aac919026c3"},
   "cowboy": {:hex, :cowboy, "2.8.0", "f3dc62e35797ecd9ac1b50db74611193c29815401e53bac9a5c0577bd7bc667d", [:rebar3], [{:cowlib, "~> 2.9.1", [hex: :cowlib, repo: "hexpm", optional: false]}, {:ranch, "~> 1.7.1", [hex: :ranch, repo: "hexpm", optional: false]}], "hexpm", "4643e4fba74ac96d4d152c75803de6fad0b3fa5df354c71afdd6cbeeb15fac8a"},
   "cowboy_telemetry": {:hex, :cowboy_telemetry, "0.3.1", "ebd1a1d7aff97f27c66654e78ece187abdc646992714164380d8a041eda16754", [:rebar3], [{:cowboy, "~> 2.7", [hex: :cowboy, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "3a6efd3366130eab84ca372cbd4a7d3c3a97bdfcfb4911233b035d117063f0af"},
-  "cowlib": {:hex, :cowlib, "2.16.1", "318d385d55f657e9a5005838c4e426e13dcd724a691438384b6165a69687e531", [:make, :rebar3], [], "hexpm", "58f1e425a9e04176f1d30e20116f57c4e90ef0e187552e9741c465bdf4044f70"},
+  "cowlib": {:hex, :cowlib, "2.18.0", "4a3ef8cb012c21c7cbb7c925f75405e26d7fcd393fd78c46187539dbc9a48310", [:make, :rebar3], [], "hexpm", "c4f89d33a61162d4cfdcb5a1af7e562d80a700b2573cc71020ce6521b152dc1a"},
   "credo": {:hex, :credo, "1.7.19", "cc52129665fc7c15143d47838fda0f9cd6dac9ceced7bf4da6f85fcbfe64b12a", [:mix], [{:bunt, "~> 0.2.1 or ~> 1.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:file_system, "~> 0.2 or ~> 1.0", [hex: :file_system, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "2d8bc95d5a7bb99dd2613621d4f08c6a3575c3fd4b62e6a2b48a100352a557b8"},
   "csv": {:hex, :csv, "2.4.1", "50e32749953b6bf9818dbfed81cf1190e38cdf24f95891303108087486c5925e", [:mix], [{:parallel_stream, "~> 1.0.4", [hex: :parallel_stream, repo: "hexpm", optional: false]}], "hexpm", "54508938ac67e27966b10ef49606e3ad5995d665d7fc2688efb3eab1307c9079"},
   "deep_merge": {:hex, :deep_merge, "1.0.0", "b4aa1a0d1acac393bdf38b2291af38cb1d4a52806cf7a4906f718e1feb5ee961", [:mix], [], "hexpm", "ce708e5f094b9cd4e8f2be4f00d2f4250c4095be93f8cd6d018c753894885430"},