diff --git a/CHANGELOG.md b/CHANGELOG.md
index 47c00b3e..b70ae7d9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## v1.13.4 (2022-03-10)
+
+### Bug fixes
+
+  * Improve deprecation warnings
+
 ## v1.13.3 (2022-02-12)
 
 ### Enhancements
diff --git a/mix.exs b/mix.exs
index 29427d8b..e7d57df4 100644
--- a/mix.exs
+++ b/mix.exs
@@ -1,7 +1,7 @@
 defmodule Plug.MixProject do
   use Mix.Project
 
-  @version "1.13.3"
+  @version "1.13.4"
   @description "Compose web applications with functions"
   @xref_exclude [Plug.Cowboy, :telemetry]
 
diff --git a/mix.lock b/mix.lock
index d58fdb88..15bf8248 100644
--- a/mix.lock
+++ b/mix.lock
@@ -1,11 +1,11 @@
 %{
-  "earmark_parser": {:hex, :earmark_parser, "1.4.19", "de0d033d5ff9fc396a24eadc2fcf2afa3d120841eb3f1004d138cbf9273210e8", [:mix], [], "hexpm", "527ab6630b5c75c3a3960b75844c314ec305c76d9899bb30f71cb85952a9dc45"},
-  "ex_doc": {:hex, :ex_doc, "0.28.0", "7eaf526dd8c80ae8c04d52ac8801594426ae322b52a6156cd038f30bafa8226f", [:mix], [{:earmark_parser, "~> 1.4.19", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1", [hex: :makeup_erlang, repo: "hexpm", optional: false]}], "hexpm", "e55cdadf69a5d1f4cfd8477122ebac5e1fadd433a8c1022dafc5025e48db0131"},
+  "earmark_parser": {:hex, :earmark_parser, "1.4.20", "89970db71b11b6b89759ce16807e857df154f8df3e807b2920a8c39834a9e5cf", [:mix], [], "hexpm", "1eb0d2dabeeeff200e0d17dc3048a6045aab271f73ebb82e416464832eb57bdd"},
+  "ex_doc": {:hex, :ex_doc, "0.28.2", "e031c7d1a9fc40959da7bf89e2dc269ddc5de631f9bd0e326cbddf7d8085a9da", [:mix], [{:earmark_parser, "~> 1.4.19", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1", [hex: :makeup_erlang, repo: "hexpm", optional: false]}], "hexpm", "51ee866993ffbd0e41c084a7677c570d0fc50cb85c6b5e76f8d936d9587fa719"},
   "makeup": {:hex, :makeup, "1.1.0", "6b67c8bc2882a6b6a445859952a602afc1a41c2e08379ca057c0f525366fc3ca", [:mix], [{:nimble_parsec, "~> 1.2.2 or ~> 1.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "0a45ed501f4a8897f580eabf99a2e5234ea3e75a4373c8a52824f6e873be57a6"},
-  "makeup_elixir": {:hex, :makeup_elixir, "0.15.2", "dc72dfe17eb240552857465cc00cce390960d9a0c055c4ccd38b70629227e97c", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.1", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "fd23ae48d09b32eff49d4ced2b43c9f086d402ee4fd4fcb2d7fad97fa8823e75"},
+  "makeup_elixir": {:hex, :makeup_elixir, "0.16.0", "f8c570a0d33f8039513fbccaf7108c5d750f47d8defd44088371191b76492b0b", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.2.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "28b2cbdc13960a46ae9a8858c4bebdec3c9a6d7b4b9e7f4ed1502f8159f338e7"},
   "makeup_erlang": {:hex, :makeup_erlang, "0.1.1", "3fcb7f09eb9d98dc4d208f49cc955a34218fc41ff6b84df7c75b3e6e533cc65f", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "174d0809e98a4ef0b3309256cbf97101c6ec01c4ab0b23e926a9e17df2077cbb"},
   "mime": {:hex, :mime, "1.6.0", "dabde576a497cef4bbdd60aceee8160e02a6c89250d6c0b29e56c0dfb00db3d2", [:mix], [], "hexpm", "31a1a8613f8321143dde1dafc36006a17d28d02bdfecb9e95a880fa7aabd19a7"},
-  "nimble_parsec": {:hex, :nimble_parsec, "1.2.2", "b99ca56bbce410e9d5ee4f9155a212e942e224e259c7ebbf8f2c86ac21d4fa3c", [:mix], [], "hexpm", "98d51bd64d5f6a2a9c6bb7586ee8129e27dfaab1140b5a4753f24dac0ba27d2f"},
+  "nimble_parsec": {:hex, :nimble_parsec, "1.2.3", "244836e6e3f1200c7f30cb56733fd808744eca61fd182f731eac4af635cc6d0b", [:mix], [], "hexpm", "c8d789e39b9131acf7b99291e93dae60ab48ef14a7ee9d58c6964f59efb570b0"},
   "plug_crypto": {:hex, :plug_crypto, "1.2.1", "5c854427528bf61d159855cedddffc0625e2228b5f30eff76d5a4de42d896ef4", [:mix], [], "hexpm", "6961c0e17febd9d0bfa89632d391d2545d2e0eb73768f5f50305a23961d8782c"},
   "telemetry": {:hex, :telemetry, "0.4.3", "a06428a514bdbc63293cd9a6263aad00ddeb66f608163bdec7c8995784080818", [:rebar3], [], "hexpm", "eb72b8365ffda5bed68a620d1da88525e326cb82a75ee61354fc24b844768041"},
 }