diff --git a/CHANGELOG.md b/CHANGELOG.md
index a382c5d..f25d352 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## 1.2.1 - 2024-01-08
+
+### Maintenance
+
+- Relax `phoenix_html` dependency requirement, allowing `~> 4.0`
+
 ## 1.2.0 - 2023-02-19
 
 ### Feature
diff --git a/mix.exs b/mix.exs
index bda107c..64c3c45 100644
--- a/mix.exs
+++ b/mix.exs
@@ -2,7 +2,7 @@ defmodule PhoenixSwoosh.Mixfile do
   use Mix.Project
 
   @source_url "https://github.com/swoosh/phoenix_swoosh"
-  @version "1.2.0"
+  @version "1.2.1"
 
   def project do
     [
@@ -27,7 +27,7 @@ defmodule PhoenixSwoosh.Mixfile do
     [
       {:swoosh, "~> 1.5"},
       {:phoenix_view, "~> 1.0 or ~> 2.0"},
-      {:phoenix_html, "~> 3.0", optional: true},
+      {:phoenix_html, "~> 3.0 or ~> 4.0", optional: true},
       {:hackney, "~> 1.10", optional: true},
       {:finch, "~> 0.8", optional: true},
       {:phoenix, "~> 1.6", optional: true},