diff --git a/.github/workflows/CI-Experimental.yml b/.github/workflows/CI-Experimental.yml
index 90a7f3d2..63c01a47 100644
--- a/.github/workflows/CI-Experimental.yml
+++ b/.github/workflows/CI-Experimental.yml
@@ -10,7 +10,7 @@ on:
 
 jobs:
   tests:
-    name: Tests on PHP 8.4 nightly
+    name: Tests on PHP 8.5 nightly
     runs-on: ubuntu-24.04
     services:
       redis:
@@ -22,7 +22,7 @@ jobs:
         uses: actions/checkout@v4
       - uses: shivammathur/setup-php@2.32.0
         with:
-          php-version: '8.4'
+          php-version: '8.5'
           extensions: mbstring, redis, apcu
           ini-values: apc.enable_cli=1, zend.assertions=1
           coverage: none
diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index cc83784e..060a79b9 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -19,8 +19,8 @@ jobs:
           - 6379/tcp
     strategy:
       matrix:
-        php: ['8.1', '8.2', '8.3']
-        dependencies: ['', '--prefer-lowest --prefer-stable']
+        php: ['8.1', '8.2', '8.3', '8.4']
+        dependencies: ['--ignore-platform-req=php', '--prefer-lowest --prefer-stable --ignore-platform-req=php']
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -78,7 +78,7 @@ jobs:
     runs-on: ubuntu-24.04
     strategy:
       matrix:
-        php: ['8.1', '8.2', '8.3']
+        php: ['8.1', '8.2', '8.3', '8.4']
     steps:
       - name: Checkout
         uses: actions/checkout@v4
diff --git a/composer.json b/composer.json
index f8b1417e..51957226 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,7 @@
     "description": "Prometheus instrumentation library",
     "license": "Apache-2.0",
     "require": {
-        "php": "~8.1.0|~8.2.0|~8.3.0",
+        "php": "~8.1.0|~8.2.0|~8.3.0|~8.4.0",
         "ext-json": "*",
         "psr/http-client": "^1.0",
         "psr/http-factory": "^1.0",
diff --git a/composer.lock b/composer.lock
index e8e1dec2..875c1a7c 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": "7291f42159b41e4ab1ab97cd4e246187",
+    "content-hash": "d526cc0a07aad408956878d261773a97",
     "packages": [
         {
             "name": "psr/http-client",
@@ -1872,12 +1872,12 @@
             "version": "v5.2.13",
             "source": {
                 "type": "git",
-                "url": "https://github.com/justinrainbow/json-schema.git",
+                "url": "https://github.com/jsonrainbow/json-schema.git",
                 "reference": "fbbe7e5d79f618997bc3332a6f49246036c45793"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/justinrainbow/json-schema/zipball/fbbe7e5d79f618997bc3332a6f49246036c45793",
+                "url": "https://api.github.com/repos/jsonrainbow/json-schema/zipball/fbbe7e5d79f618997bc3332a6f49246036c45793",
                 "reference": "fbbe7e5d79f618997bc3332a6f49246036c45793",
                 "shasum": ""
             },
@@ -4976,12 +4976,12 @@
             "version": "3.7.2",
             "source": {
                 "type": "git",
-                "url": "https://github.com/squizlabs/PHP_CodeSniffer.git",
+                "url": "https://github.com/PHPCSStandards/PHP_CodeSniffer.git",
                 "reference": "ed8e00df0a83aa96acf703f8c2979ff33341f879"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/squizlabs/PHP_CodeSniffer/zipball/ed8e00df0a83aa96acf703f8c2979ff33341f879",
+                "url": "https://api.github.com/repos/PHPCSStandards/PHP_CodeSniffer/zipball/ed8e00df0a83aa96acf703f8c2979ff33341f879",
                 "reference": "ed8e00df0a83aa96acf703f8c2979ff33341f879",
                 "shasum": ""
             },
@@ -6378,7 +6378,7 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": "~8.1.0|~8.2.0|~8.3.0",
+        "php": "~8.1.0|~8.2.0|~8.3.0|~8.4.0",
         "ext-json": "*"
     },
     "platform-dev": [],
diff --git a/php-fpm/Dockerfile b/php-fpm/Dockerfile
index ff9d37ea..fc7abadd 100644
--- a/php-fpm/Dockerfile
+++ b/php-fpm/Dockerfile
@@ -1,8 +1,8 @@
 ARG PHP_VERSION
 FROM php:${PHP_VERSION}-fpm
 
-RUN pecl install redis-5.3.4 && \
-    pecl install apcu-5.1.21 && \
+RUN pecl install redis-6.1.0 && \
+    pecl install apcu-5.1.24 && \
     docker-php-ext-enable redis apcu
 
 COPY www.conf /usr/local/etc/php-fpm.d/