diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 43f44db..aac52f1 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -15,8 +15,7 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - '8.2'
-          - '8.3'
+          - '8.4'
     steps:
       - uses: actions/checkout@v4
 
diff --git a/composer.json b/composer.json
index 786170b..0647429 100644
--- a/composer.json
+++ b/composer.json
@@ -10,12 +10,12 @@
         "xml"
     ],
     "require": {
-        "php": ">=8.2",
-        "ext-SimpleXML": "^8.2",
-        "ext-json": "^8.2",
-        "ext-libxml": "^8.2",
-        "ext-xmlreader": "^8.2",
-        "ext-xmlwriter": "^8.2"
+        "php": ">=8.4",
+        "ext-SimpleXML": "^8.4",
+        "ext-json": "^8.4",
+        "ext-libxml": "^8.4",
+        "ext-xmlreader": "^8.4",
+        "ext-xmlwriter": "^8.4"
     },
     "require-dev": {
         "ergebnis/composer-normalize": "^2.42",
diff --git a/composer.lock b/composer.lock
index ec71540..9f18349 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": "45f038ec08afec67b839235ae2f4bd64",
+    "content-hash": "a080fa9237666a6dac2f3765c3ff72c8",
     "packages": [],
     "packages-dev": [
         {
@@ -2531,13 +2531,13 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": ">=8.2",
-        "ext-simplexml": "^8.2",
-        "ext-json": "^8.2",
-        "ext-libxml": "^8.2",
-        "ext-xmlreader": "^8.2",
-        "ext-xmlwriter": "^8.2"
+        "php": ">=8.4",
+        "ext-simplexml": "^8.4",
+        "ext-json": "^8.4",
+        "ext-libxml": "^8.4",
+        "ext-xmlreader": "^8.4",
+        "ext-xmlwriter": "^8.4"
     },
     "platform-dev": [],
-    "plugin-api-version": "2.3.0"
+    "plugin-api-version": "2.6.0"
 }
diff --git a/docker/php-cli/Dockerfile b/docker/php-cli/Dockerfile
index 6003bac..8cc8ce2 100644
--- a/docker/php-cli/Dockerfile
+++ b/docker/php-cli/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:8.2.8-cli-alpine
+FROM php:8.4.6-cli-alpine
 
 RUN apk add --update --no-cache git openssh zip unzip p7zip
 RUN cp "$PHP_INI_DIR/php.ini-development" "$PHP_INI_DIR/php.ini"