diff --git a/mix.exs b/mix.exs
index 3c3f5e6..153e8fd 100644
--- a/mix.exs
+++ b/mix.exs
@@ -62,7 +62,7 @@ defmodule OpenIDConnect.Mixfile do
       {:jose, "~> 1.8"},
       {:earmark, "~> 1.2", only: :dev},
       {:ex_doc, "~> 0.18", only: :dev},
-      {:mox, "~> 0.4", only: :test}
+      {:mox, "~> 1.0", only: :test}
     ]
   end
 end
diff --git a/mix.lock b/mix.lock
index 9e314f7..4151927 100644
--- a/mix.lock
+++ b/mix.lock
@@ -13,7 +13,7 @@
   "makeup_elixir": {:hex, :makeup_elixir, "0.10.0", "0f09c2ddf352887a956d84f8f7e702111122ca32fbbc84c2f0569b8b65cbf7fa", [:mix], [{:makeup, "~> 0.5.5", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "4a36dd2d0d5c5f98d95b3f410d7071cd661d5af310472229dd0e92161f168a44"},
   "metrics": {:hex, :metrics, "1.0.1", "25f094dea2cda98213cecc3aeff09e940299d950904393b2a29d191c346a8486", [:rebar3], [], "hexpm", "69b09adddc4f74a40716ae54d140f93beb0fb8978d8636eaded0c31b6f099f16"},
   "mimerl": {:hex, :mimerl, "1.0.2", "993f9b0e084083405ed8252b99460c4f0563e41729ab42d9074fd5e52439be88", [:rebar3], [], "hexpm", "7a4c8e1115a2732a67d7624e28cf6c9f30c66711a9e92928e745c255887ba465"},
-  "mox": {:hex, :mox, "0.4.0", "7f120840f7d626184a3d65de36189ca6f37d432e5d63acd80045198e4c5f7e6e", [:mix], [], "hexpm", "64fca8aca4699cc1acf7db19237ce781cfa46683082a440e9f4e1ac29e290d89"},
+  "mox": {:hex, :mox, "1.0.2", "dc2057289ac478b35760ba74165b4b3f402f68803dd5aecd3bfd19c183815d64", [:mix], [], "hexpm", "f9864921b3aaf763c8741b5b8e6f908f44566f1e427b2630e89e9a73b981fef2"},
   "nimble_parsec": {:hex, :nimble_parsec, "0.4.0", "ee261bb53214943679422be70f1658fff573c5d0b0a1ecd0f18738944f818efe", [:mix], [], "hexpm", "ebb595e19456a72786db6dcd370d320350cb624f0b6203fcc7e23161d49b0ffb"},
   "parse_trans": {:hex, :parse_trans, "3.3.0", "09765507a3c7590a784615cfd421d101aec25098d50b89d7aa1d66646bc571c1", [:rebar3], [], "hexpm", "17ef63abde837ad30680ea7f857dd9e7ced9476cdd7b0394432af4bfc241b960"},
   "poison": {:hex, :poison, "3.1.0", "d9eb636610e096f86f25d9a46f35a9facac35609a7591b3be3326e99a0484665", [:mix], [], "hexpm"},