diff --git a/composer.json b/composer.json
index a0dd2fba91..041f901b43 100644
--- a/composer.json
+++ b/composer.json
@@ -15,11 +15,11 @@
     ],
     "homepage": "http://elastica.io/",
     "require": {
-        "php": "^7.2 || ^8.0",
+        "php": "^8.1",
         "ext-json": "*",
-        "elasticsearch/elasticsearch": "^7.1.1",
+        "elasticsearch/elasticsearch": "^9.3",
         "nyholm/dsn": "^2.0.0",
-        "psr/log": "^1.0 || ^2.0 || ^3.0",
+        "psr/log": "^2.0 || ^3.0",
         "symfony/deprecation-contracts": "^2.2 || ^3.0",
         "symfony/polyfill-php73": "^1.19",
         "marc-mabe/php-enum": "^4.7"
@@ -51,5 +51,10 @@
         "branch-alias": {
             "dev-master": "7.0.x-dev"
         }
+    },
+    "config": {
+        "allow-plugins": {
+            "php-http/discovery": true
+        }
     }
 }
diff --git a/docker/docker-compose.es.yml b/docker/docker-compose.es.yml
index 5cc514b768..c00e2b0a74 100644
--- a/docker/docker-compose.es.yml
+++ b/docker/docker-compose.es.yml
@@ -1,48 +1,51 @@
 version: '3.4'
 
 services:
-    es01:
-        image: &image docker.elastic.co/elasticsearch/elasticsearch:${ES_VERSION:-7.15.2}
-        command: &command >
-            /bin/sh -c "./bin/elasticsearch-plugin list | grep -q ingest-attachment
-            || ./bin/elasticsearch-plugin install --batch ingest-attachment;
-            chown elasticsearch /usr/share/elasticsearch/repository;
-            /usr/local/bin/docker-entrypoint.sh"
-        environment: &environment
-            node.name: es01
-            cluster.name: es-docker-cluster
-            cluster.initial_master_nodes: es01
-            discovery.seed_hosts: es01
-            bootstrap.memory_lock: 'true'
-            ES_JAVA_OPTS: -Xms512m -Xmx512m
-            path.repo: /usr/share/elasticsearch/repository
-        ulimits: &ulimits
-            memlock:
-                soft: -1
-                hard: -1
-        volumes:
-            - data01:/usr/share/elasticsearch/data
-            - esrepo:/usr/share/elasticsearch/repository
-        ports:
-            - 9200:9200
-        networks: &networks
-            - elastic
-    es02:
-        image: *image
-        command: *command
-        environment:
-            <<: *environment
-            node.name: es02
-        ulimits: *ulimits
-        volumes:
-            - data02:/usr/share/elasticsearch/data
-            - esrepo:/usr/share/elasticsearch/repository
-        networks: *networks
+  es01:
+    image: &image docker.elastic.co/elasticsearch/elasticsearch:${ES_VERSION:-9.3.0}
+    command: &command >
+      /bin/sh -c "./bin/elasticsearch-plugin list | grep -q ingest-attachment
+      || ./bin/elasticsearch-plugin install --batch ingest-attachment;
+      chown elasticsearch /usr/share/elasticsearch/repository;
+      /usr/local/bin/docker-entrypoint.sh"
+    environment: &environment
+      node.name: es01
+      cluster.name: es-docker-cluster
+      cluster.initial_master_nodes: es01
+      discovery.seed_hosts: es01
+      bootstrap.memory_lock: 'true'
+      ES_JAVA_OPTS: -Xms512m -Xmx512m
+      path.repo: /usr/share/elasticsearch/repository
+      xpack.security.enabled: "false"
+      xpack.security.transport.ssl.enabled: "false"
+      action.destructive_requires_name: "false"
+    ulimits: &ulimits
+      memlock:
+        soft: -1
+        hard: -1
+    volumes:
+      - data01:/usr/share/elasticsearch/data
+      - esrepo:/usr/share/elasticsearch/repository
+    ports:
+      - 9200:9200
+    networks: &networks
+      - elastic
+  es02:
+    image: *image
+    command: *command
+    environment:
+      <<: *environment
+      node.name: es02
+    ulimits: *ulimits
+    volumes:
+      - data02:/usr/share/elasticsearch/data
+      - esrepo:/usr/share/elasticsearch/repository
+    networks: *networks
 volumes:
-    data01:
-    data02:
-    esrepo:
+  data01:
+  data02:
+  esrepo:
 
 networks:
-    elastic:
-        driver: bridge
+  elastic:
+    driver: bridge
diff --git a/docker/php/Dockerfile b/docker/php/Dockerfile
index d038053d76..f275e7c11a 100644
--- a/docker/php/Dockerfile
+++ b/docker/php/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:7.2-fpm-alpine
+FROM php:8.1-fpm-alpine
 
 COPY --from=composer /usr/bin/composer /usr/bin/composer
 
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index b06aa1d0b3..60baefba98 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -2,27 +2,27 @@
 
 <!-- https://phpunit.de/manual/current/en/appendixes.configuration.html -->
 <phpunit
-  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/8.5/phpunit.xsd"
-  colors                                  = "true"
-  beStrictAboutOutputDuringTests          = "true"
-  verbose                                 = "true"
-  bootstrap                               = "vendor/autoload.php"
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.5/phpunit.xsd"
+        colors                                  = "true"
+        beStrictAboutOutputDuringTests          = "true"
+        verbose                                 = "true"
+        bootstrap                               = "vendor/autoload.php"
 >
-  <filter>
-    <whitelist>
-      <directory>src/</directory>
-      <exclude>
-        <file>src/Query/Match.php</file>
-      </exclude>
-    </whitelist>
-  </filter>
-  <listeners>
-    <listener class="Symfony\Bridge\PhpUnit\SymfonyTestsListener"/>
-  </listeners>
-  <testsuites>
-    <testsuite name="default">
-      <directory>tests/</directory>
-    </testsuite>
-  </testsuites>
+    <coverage>
+        <include>
+            <directory>src/</directory>
+        </include>
+        <exclude>
+            <file>src/Query/Match.php</file>
+        </exclude>
+    </coverage>
+    <listeners>
+        <listener class="Symfony\Bridge\PhpUnit\SymfonyTestsListener"/>
+    </listeners>
+    <testsuites>
+        <testsuite name="default">
+            <directory>tests/</directory>
+        </testsuite>
+    </testsuites>
 </phpunit>
diff --git a/src/ApiVersion.php b/src/ApiVersion.php
index debc830a6f..a8a7e922f1 100644
--- a/src/ApiVersion.php
+++ b/src/ApiVersion.php
@@ -7,4 +7,6 @@ class ApiVersion
     public const API_VERSION_6 = 6;
 
     public const API_VERSION_7 = 7;
+
+    public const API_VERSION_9 = 9;
 }
diff --git a/src/ElasticSearchVersion.php b/src/ElasticSearchVersion.php
index 42d015bc1b..0b05597d0d 100644
--- a/src/ElasticSearchVersion.php
+++ b/src/ElasticSearchVersion.php
@@ -12,4 +12,6 @@ class ElasticSearchVersion extends Enum
     public const VERSION_6 = 6;
 
     public const VERSION_7 = 7;
+
+    public const VERSION_9 = 9;
 }
diff --git a/src/Elasticsearch/Endpoints/Update.php b/src/Elasticsearch/Endpoints/Update.php
deleted file mode 100644
index cea30ce4ba..0000000000
--- a/src/Elasticsearch/Endpoints/Update.php
+++ /dev/null
@@ -1,21 +0,0 @@
-<?php
-
-namespace Elastica\Elasticsearch\Endpoints;
-
-use Elastica\CustomOptions;
-use Elasticsearch\Endpoints\Update as BaseUpdate;
-
-class Update extends BaseUpdate
-{
-    public function getParamWhitelist(): array
-    {
-        // We need this for BC compatibility
-        return array_merge(
-            parent::getParamWhitelist(),
-            [
-                'version',
-                CustomOptions::REQUEST_TAGS,
-            ]
-        );
-    }
-}