diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1913e92..704ebcc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 For a full diff see [`3.4.0...main`][3.4.0...main].
 
+### Changed
+
+- Allowed installation on PHP 8.4 ([#419]), by [@localheinz]
+
 ## [`3.4.0`][3.4.0]
 
 For a full diff see [`3.3.0...3.4.0`][3.3.0...3.4.0].
@@ -136,5 +140,6 @@ For a full diff see [`a5ba52c...1.0.0`][a5ba52c...1.0.0].
 [#271]: https://github.com/ergebnis/json-pointer/pull/271
 [#339]: https://github.com/ergebnis/json-pointer/pull/339
 [#340]: https://github.com/ergebnis/json-pointer/pull/340
+[#419]: https://github.com/ergebnis/json-pointer/pull/419
 
 [@localheinz]: https://github.com/localheinz
diff --git a/composer.json b/composer.json
index 48f8a3b..45ab260 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
     "security": "https://github.com/ergebnis/json-pointer/blob/main/.github/SECURITY.md"
   },
   "require": {
-    "php": "~7.4.0 || ~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0"
+    "php": "~7.4.0 || ~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0 || ~8.4.0"
   },
   "require-dev": {
     "ergebnis/composer-normalize": "^2.43.0",
diff --git a/composer.lock b/composer.lock
index e75dae4..871b55f 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "57a4d2eb977cfd0b33dc2dc12f8c2620",
+    "content-hash": "d4ebe76033f10d323cb004330f37d47d",
     "packages": [],
     "packages-dev": [
         {
@@ -7049,7 +7049,7 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": "~7.4.0 || ~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0"
+        "php": "~7.4.0 || ~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0 || ~8.4.0"
     },
     "platform-dev": [],
     "platform-overrides": {