diff --git a/mix.exs b/mix.exs
index efbdce6..bcf578f 100644
--- a/mix.exs
+++ b/mix.exs
@@ -63,7 +63,8 @@ defmodule Req.MixProject do
       {:aws_signature, "~> 0.3.2", only: :test},
       {:bypass, "~> 2.1", only: :test},
       {:ex_doc, ">= 0.0.0", only: :docs},
-      {:bandit, "~> 1.0", only: :test}
+      {:bandit, "~> 1.0", only: :test},
+      {:castore, "~> 1.0", only: :test}
     ]
   end
 
diff --git a/mix.lock b/mix.lock
index 25ecbe1..522359a 100644
--- a/mix.lock
+++ b/mix.lock
@@ -3,6 +3,7 @@
   "bandit": {:hex, :bandit, "1.5.0", "3bc864a0da7f013ad3713a7f550c6a6ec0e19b8d8715ec678256a0dc197d5539", [:mix], [{:hpax, "~> 0.1.1", [hex: :hpax, repo: "hexpm", optional: false]}, {:plug, "~> 1.14", [hex: :plug, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}, {:thousand_island, "~> 1.0", [hex: :thousand_island, repo: "hexpm", optional: false]}, {:websock, "~> 0.5", [hex: :websock, repo: "hexpm", optional: false]}], "hexpm", "92d18d9a7228a597e0d4661ef69a874ea82d63ff49c7d801a5c68cb18ebbbd72"},
   "brotli": {:hex, :brotli, "0.3.2", "59cf45a399098516f1d34f70d8e010e5c9bf326659d3ef34c7cc56793339002b", [:rebar3], [], "hexpm", "9ec3ef9c753f80d0c657b4905193c55e5198f169fa1d1c044d8601d4d931a2ad"},
   "bypass": {:hex, :bypass, "2.1.0", "909782781bf8e20ee86a9cabde36b259d44af8b9f38756173e8f5e2e1fabb9b1", [:mix], [{:plug, "~> 1.7", [hex: :plug, repo: "hexpm", optional: false]}, {:plug_cowboy, "~> 2.0", [hex: :plug_cowboy, repo: "hexpm", optional: false]}, {:ranch, "~> 1.3", [hex: :ranch, repo: "hexpm", optional: false]}], "hexpm", "d9b5df8fa5b7a6efa08384e9bbecfe4ce61c77d28a4282f79e02f1ef78d96b80"},
+  "castore": {:hex, :castore, "1.0.8", "dedcf20ea746694647f883590b82d9e96014057aff1d44d03ec90f36a5c0dc6e", [:mix], [], "hexpm", "0b2b66d2ee742cb1d9cb8c8be3b43c3a70ee8651f37b75a8b982e036752983f1"},
   "cowboy": {:hex, :cowboy, "2.12.0", "f276d521a1ff88b2b9b4c54d0e753da6c66dd7be6c9fca3d9418b561828a3731", [:make, :rebar3], [{:cowlib, "2.13.0", [hex: :cowlib, repo: "hexpm", optional: false]}, {:ranch, "1.8.0", [hex: :ranch, repo: "hexpm", optional: false]}], "hexpm", "8a7abe6d183372ceb21caa2709bec928ab2b72e18a3911aa1771639bef82651e"},
   "cowboy_telemetry": {:hex, :cowboy_telemetry, "0.4.0", "f239f68b588efa7707abce16a84d0d2acf3a0f50571f8bb7f56a15865aae820c", [:rebar3], [{:cowboy, "~> 2.7", [hex: :cowboy, repo: "hexpm", optional: false]}, {:telemetry, "~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "7d98bac1ee4565d31b62d59f8823dfd8356a169e7fcbb83831b8a5397404c9de"},
   "cowlib": {:hex, :cowlib, "2.13.0", "db8f7505d8332d98ef50a3ef34b34c1afddec7506e4ee4dd4a3a266285d282ca", [:make, :rebar3], [], "hexpm", "e1e1284dc3fc030a64b1ad0d8382ae7e99da46c3246b815318a4b848873800a4"},