diff --git a/.github/workflows/CI-Experimental.yml b/.github/workflows/CI-Experimental.yml
index 4f29e57..3c7dc1d 100644
--- a/.github/workflows/CI-Experimental.yml
+++ b/.github/workflows/CI-Experimental.yml
@@ -10,7 +10,7 @@ on:
 
 jobs:
   tests:
-    name: Tests on PHP 8.5 nightly
+    name: Tests on PHP 8.6 nightly
     runs-on: ubuntu-24.04
     services:
       valkey:
@@ -24,7 +24,7 @@ jobs:
           persist-credentials: false
       - uses: shivammathur/setup-php@44454db4f0199b8b9685a5d763dc37cbf79108e1 # 2.36.0
         with:
-          php-version: '8.5'
+          php-version: '8.6'
           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 165cda6..a88660f 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -21,7 +21,7 @@ jobs:
           - 6379/tcp
     strategy:
       matrix:
-        php: ['8.2', '8.3', '8.4']
+        php: ['8.2', '8.3', '8.4', '8.5']
         dependencies: ['--ignore-platform-req=php', '--prefer-lowest --prefer-stable --ignore-platform-req=php']
     steps:
       - name: Checkout
@@ -84,7 +84,7 @@ jobs:
     runs-on: ubuntu-24.04
     strategy:
       matrix:
-        php: ['8.2', '8.3', '8.4']
+        php: ['8.2', '8.3', '8.4', '8.5']
     steps:
       - name: Checkout
         uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
diff --git a/composer.json b/composer.json
index 3df31ee..c550aaa 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,7 @@
     "description": "Prometheus instrumentation library",
     "license": "Apache-2.0",
     "require": {
-        "php": "~8.2.0|~8.3.0|~8.4.0",
+        "php": "~8.2.0|~8.3.0|~8.4.0|~8.5.0",
         "ext-json": "*",
         "psr/http-client": "^1.0",
         "psr/http-factory": "^1.0",
diff --git a/composer.lock b/composer.lock
index ac1c263..7b0ccb6 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": "3e1a5407a854d8366d5d20bc35bc2243",
+    "content-hash": "cd8af9ba102060e8e1317cbc44b58ce5",
     "packages": [
         {
             "name": "psr/http-client",
@@ -7796,7 +7796,7 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": "~8.2.0|~8.3.0|~8.4.0",
+        "php": "~8.2.0|~8.3.0|~8.4.0|~8.5.0",
         "ext-json": "*"
     },
     "platform-dev": {},
diff --git a/php-fpm/Dockerfile b/php-fpm/Dockerfile
index fc7abad..849f22a 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-6.1.0 && \
-    pecl install apcu-5.1.24 && \
+RUN pecl install redis-6.3.0 && \
+    pecl install apcu-5.1.27 && \
     docker-php-ext-enable redis apcu
 
 COPY www.conf /usr/local/etc/php-fpm.d/