diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2d4775872a..dbf08977f7 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ All notable changes to this project will be documented in this file based on the
 * Elastica\Reindex->run() does not refresh the new Index after completion anymore. Use `$reindex->setParam(Reindex::REFRESH, 'wait_for')` instead.
 * `Elastica\Search->search()` and `Elastica\Search->count()` use request method `POST` by default. Same for `Elastica\Index`, `Elastica\Type\AbstractType`, `Elastica\Type`.
 * Elastica\Client `$_config` field is now a `ClientConfiguration` instead of an array
+* Removed `\Elastica\Client::_log`, `\Elastica\Log` and the `log` configuration option. Use the `Psr\Log\LoggerInterface $logger` client argument to customize logging.
 
 ### Bugfixes
 * Always set the Guzzle `base_uri` to support connecting to multiple ES hosts. [#1618](https://github.com/ruflin/Elastica/pull/1618)
diff --git a/lib/Elastica/Client.php b/lib/Elastica/Client.php
index f055ebe503..f47376baf5 100644
--- a/lib/Elastica/Client.php
+++ b/lib/Elastica/Client.php
@@ -76,10 +76,6 @@ public function __construct($config = [], callable $callback = null, LoggerInter
 
         $this->_config = $configuration;
         $this->_callback = $callback;
-
-        if (!$logger && $configuration->get('log')) {
-            $logger = new Log($configuration->get('log'));
-        }
         $this->_logger = $logger ?: new NullLogger();
 
         $this->_initConnections();
@@ -635,7 +631,11 @@ public function request($path, $method = Request::GET, $data = [], array $query
             $response = $this->_lastResponse = $request->send();
         } catch (ConnectionException $e) {
             $this->_connectionPool->onFail($connection, $e, $this);
-            $this->_log($e);
+            $this->_logger->error('Elastica Request Failure', [
+                'exception' => $e,
+                'request' => $e->getRequest()->toArray(),
+                'retry' => $this->hasConnection(),
+            ]);
 
             // In case there is no valid connection left, throw exception which caused the disabling of the connection.
             if (!$this->hasConnection()) {
@@ -645,7 +645,11 @@ public function request($path, $method = Request::GET, $data = [], array $query
             return $this->request($path, $method, $data, $query);
         }
 
-        $this->_log($request);
+        $this->_logger->debug('Elastica Request', [
+            'request' => $request,
+            'response' => $this->_lastResponse ? $this->_lastResponse->getData() : null,
+            'responseStatus' => $this->_lastResponse ? $this->_lastResponse->getStatus() : null,
+        ]);
 
         return $response;
     }
@@ -667,40 +671,6 @@ public function requestEndpoint(AbstractEndpoint $endpoint)
         );
     }
 
-    /**
-     * logging.
-     *
-     * @deprecated Overwriting Client->_log is deprecated. Handle logging functionality by using a custom LoggerInterface.
-     *
-     * @param mixed $context
-     */
-    protected function _log($context)
-    {
-        if ($context instanceof ConnectionException) {
-            $this->_logger->error('Elastica Request Failure', [
-                'exception' => $context,
-                'request' => $context->getRequest()->toArray(),
-                'retry' => $this->hasConnection(),
-            ]);
-
-            return;
-        }
-
-        if ($context instanceof Request) {
-            $this->_logger->debug('Elastica Request', [
-                'request' => $context->toArray(),
-                'response' => $this->_lastResponse ? $this->_lastResponse->getData() : null,
-                'responseStatus' => $this->_lastResponse ? $this->_lastResponse->getStatus() : null,
-            ]);
-
-            return;
-        }
-
-        $this->_logger->debug('Elastica Request', [
-            'message' => $context,
-        ]);
-    }
-
     /**
      * Force merges all search indices.
      *
diff --git a/lib/Elastica/ClientConfiguration.php b/lib/Elastica/ClientConfiguration.php
index a2abb25013..b8650d1243 100644
--- a/lib/Elastica/ClientConfiguration.php
+++ b/lib/Elastica/ClientConfiguration.php
@@ -14,7 +14,6 @@ class ClientConfiguration
     /**
      * Config with defaults.
      *
-     * log: Set to true, to enable logging, set a string to log to a specific file
      * retryOnConflict: Use in \Elastica\Client::updateDocument
      * bigintConversion: Set to true to enable the JSON bigint to string conversion option (see issue #717)
      *
@@ -31,7 +30,6 @@ class ClientConfiguration
         'timeout' => null,
         'connections' => [], // host, port, path, timeout, transport, compression, persistent, timeout, username, password, config -> (curl, headers, url)
         'roundRobin' => false,
-        'log' => false,
         'retryOnConflict' => 0,
         'bigintConversion' => false,
         'username' => null,
diff --git a/lib/Elastica/Log.php b/lib/Elastica/Log.php
deleted file mode 100644
index d73d0a137e..0000000000
--- a/lib/Elastica/Log.php
+++ /dev/null
@@ -1,82 +0,0 @@
-<?php
-
-namespace Elastica;
-
-use Psr\Log\AbstractLogger;
-
-/**
- * Elastica log object.
- *
- * @author Nicolas Ruflin <spam@ruflin.com>
- */
-class Log extends AbstractLogger
-{
-    /**
-     * Log path or true if enabled.
-     *
-     * @var string|bool
-     */
-    protected $_log;
-
-    /**
-     * Last logged message.
-     *
-     * @var string Last logged message
-     */
-    protected $_lastMessage;
-
-    /**
-     * Inits log object.
-     *
-     * @param string|bool String to set a specific file for logging
-     */
-    public function __construct($log = '')
-    {
-        $this->setLog($log);
-    }
-
-    /**
-     * Log a message.
-     *
-     * @param mixed  $level
-     * @param string $message
-     * @param array  $context
-     *
-     * @return void|null
-     */
-    public function log($level, $message, array $context = [])
-    {
-        $context['error_message'] = $message;
-        $this->_lastMessage = JSON::stringify($context);
-
-        if (!empty($this->_log) && \is_string($this->_log)) {
-            \error_log($this->_lastMessage.PHP_EOL, 3, $this->_log);
-        } else {
-            \error_log($this->_lastMessage);
-        }
-    }
-
-    /**
-     * Enable/disable log or set log path.
-     *
-     * @param bool|string $log Enables log or sets log path
-     *
-     * @return $this
-     */
-    public function setLog($log)
-    {
-        $this->_log = $log;
-
-        return $this;
-    }
-
-    /**
-     * Return last logged message.
-     *
-     * @return string Last logged message
-     */
-    public function getLastMessage()
-    {
-        return $this->_lastMessage;
-    }
-}
diff --git a/test/Elastica/ClientConfigurationTest.php b/test/Elastica/ClientConfigurationTest.php
index f1b17af356..4fc9754f3b 100644
--- a/test/Elastica/ClientConfigurationTest.php
+++ b/test/Elastica/ClientConfigurationTest.php
@@ -24,7 +24,7 @@ public function testFromSimpleDsn()
 
         $expected = [
             'host' => '192.168.1.1',
-            'port' => '9201',
+            'port' => 9201,
             'path' => null,
             'url' => null,
             'proxy' => null,
@@ -33,7 +33,6 @@ public function testFromSimpleDsn()
             'timeout' => null,
             'connections' => [],
             'roundRobin' => false,
-            'log' => false,
             'retryOnConflict' => 0,
             'bigintConversion' => false,
             'username' => null,
@@ -45,7 +44,7 @@ public function testFromSimpleDsn()
 
     public function testFromDsnWithParameters()
     {
-        $configuration = ClientConfiguration::fromDsn('https://user:p4ss@foo.com:9201/my-path?proxy=https://proxy.com&persistent=false&timeout=45&roundRobin=true&log=true&retryOnConflict=2&bigintConversion=true&extra=abc');
+        $configuration = ClientConfiguration::fromDsn('https://user:p4ss@foo.com:9201/my-path?proxy=https://proxy.com&persistent=false&timeout=45&roundRobin=true&retryOnConflict=2&bigintConversion=true&extra=abc');
         $expected = [
             'host' => 'foo.com',
             'port' => '9201',
@@ -57,7 +56,6 @@ public function testFromDsnWithParameters()
             'timeout' => 45,
             'connections' => [],
             'roundRobin' => true,
-            'log' => true,
             'retryOnConflict' => 2,
             'bigintConversion' => true,
             'username' => 'user',
@@ -83,7 +81,6 @@ public function testFromEmptyArray()
             'timeout' => null,
             'connections' => [], // host, port, path, timeout, transport, compression, persistent, timeout, username, password, config -> (curl, headers, url)
             'roundRobin' => false,
-            'log' => false,
             'retryOnConflict' => 0,
             'bigintConversion' => false,
             'username' => null,
@@ -111,7 +108,6 @@ public function testFromArray()
             'timeout' => null,
             'connections' => [], // host, port, path, timeout, transport, compression, persistent, timeout, username, password, config -> (curl, headers, url)
             'roundRobin' => false,
-            'log' => false,
             'retryOnConflict' => 0,
             'bigintConversion' => false,
             'username' => 'Jdoe',
@@ -145,7 +141,6 @@ public function testGet()
             'timeout' => null,
             'connections' => [],
             'roundRobin' => false,
-            'log' => false,
             'retryOnConflict' => 0,
             'bigintConversion' => false,
             'username' => null,
diff --git a/test/Elastica/ClientTest.php b/test/Elastica/ClientTest.php
index 42c58d6e1d..1ecd5447d0 100644
--- a/test/Elastica/ClientTest.php
+++ b/test/Elastica/ClientTest.php
@@ -41,7 +41,7 @@ public function testConstructWithDsn()
 
         $expected = [
             'host' => 'foo.com',
-            'port' => '9200',
+            'port' => 9200,
             'path' => null,
             'url' => null,
             'proxy' => null,
@@ -50,7 +50,6 @@ public function testConstructWithDsn()
             'timeout' => null,
             'connections' => [],
             'roundRobin' => false,
-            'log' => false,
             'retryOnConflict' => 2,
             'bigintConversion' => false,
             'username' => 'user',
diff --git a/test/Elastica/LogTest.php b/test/Elastica/LogTest.php
deleted file mode 100644
index bc854f695b..0000000000
--- a/test/Elastica/LogTest.php
+++ /dev/null
@@ -1,197 +0,0 @@
-<?php
-
-namespace Elastica\Test;
-
-use Elastica\Log;
-use Elastica\Test\Base as BaseTest;
-use Psr\Log\LogLevel;
-
-class LogTest extends BaseTest
-{
-    private $_context = [];
-    private $_message = 'hello world';
-
-    public static function setUpBeforeClass()
-    {
-        if (!\class_exists('Psr\Log\AbstractLogger')) {
-            self::markTestSkipped('The Psr extension is not available.');
-        }
-    }
-
-    /**
-     * @group unit
-     */
-    public function testLogInterface()
-    {
-        $log = new Log();
-        $this->assertInstanceOf('Psr\Log\LoggerInterface', $log);
-    }
-
-    /**
-     * @group unit
-     */
-    public function testSetLogConfigPath()
-    {
-        $logPath = '/tmp/php.log';
-        $client = $this->_getClient(['log' => $logPath]);
-        $this->assertEquals($logPath, $client->getConfig('log'));
-    }
-
-    /**
-     * @group unit
-     */
-    public function testSetLogConfigEnable()
-    {
-        $client = $this->_getClient(['log' => true]);
-        $this->assertTrue($client->getConfig('log'));
-    }
-
-    /**
-     * @group unit
-     */
-    public function testSetLogConfigEnable1()
-    {
-        $client = $this->_getClient();
-        $client->setLogger(new Log());
-        $this->assertFalse($client->getConfig('log'));
-    }
-
-    /**
-     * @group unit
-     */
-    public function testEmptyLogConfig()
-    {
-        $client = $this->_getClient();
-        $this->assertEmpty($client->getConfig('log'));
-    }
-
-    /**
-     * @group unit
-     */
-    public function testGetLastMessage()
-    {
-        $log = new Log('/tmp/php.log');
-
-        $log->log(LogLevel::DEBUG, $this->_message, $this->_context);
-
-        $this->_context['error_message'] = $this->_message;
-        $message = \json_encode($this->_context);
-
-        $this->assertEquals($message, $log->getLastMessage());
-    }
-
-    /**
-     * @group unit
-     */
-    public function testGetLastMessage2()
-    {
-        $client = $this->_getClient(['log' => true]);
-        $log = new Log($client);
-
-        // Set log path temp path as otherwise test fails with output
-        $errorLog = \ini_get('error_log');
-        \ini_set('error_log', \sys_get_temp_dir().DIRECTORY_SEPARATOR.'php.log');
-
-        $this->_context['error_message'] = $this->_message;
-        $message = \json_encode($this->_context);
-
-        $log->log(LogLevel::DEBUG, $this->_message, $this->_context);
-        \ini_set('error_log', $errorLog);
-
-        $this->assertEquals($message, $log->getLastMessage());
-    }
-
-    /**
-     * @group unit
-     */
-    public function testGetLastMessageInfo()
-    {
-        $log = $this->initLog();
-        $log->info($this->_message, $this->_context);
-        $this->assertEquals($this->getMessage(), $log->getLastMessage());
-    }
-
-    /**
-     * @group unit
-     */
-    public function testGetLastMessageCritical()
-    {
-        $log = $this->initLog();
-        $log->critical($this->_message, $this->_context);
-        $this->assertEquals($this->getMessage(), $log->getLastMessage());
-    }
-
-    /**
-     * @group unit
-     */
-    public function testGetLastMessageAlert()
-    {
-        $log = $this->initLog();
-        $log->alert($this->_message, $this->_context);
-        $this->assertEquals($this->getMessage(), $log->getLastMessage());
-    }
-
-    /**
-     * @group unit
-     */
-    public function testGetLastMessageDebug()
-    {
-        $log = $this->initLog();
-        $log->debug($this->_message, $this->_context);
-        $this->assertEquals($this->getMessage(), $log->getLastMessage());
-    }
-
-    /**
-     * @group unit
-     */
-    public function testGetLastMessageEmergency()
-    {
-        $log = $this->initLog();
-        $log->emergency($this->_message, $this->_context);
-        $this->assertEquals($this->getMessage(), $log->getLastMessage());
-    }
-
-    /**
-     * @group unit
-     */
-    public function testGetLastMessageError()
-    {
-        $log = $this->initLog();
-        $log->error($this->_message, $this->_context);
-        $this->assertEquals($this->getMessage(), $log->getLastMessage());
-    }
-
-    /**
-     * @group unit
-     */
-    public function testGetLastMessageNotice()
-    {
-        $log = $this->initLog();
-        $log->notice($this->_message, $this->_context);
-        $this->assertEquals($this->getMessage(), $log->getLastMessage());
-    }
-
-    /**
-     * @group unit
-     */
-    public function testGetLastMessageWarning()
-    {
-        $log = $this->initLog();
-        $log->warning($this->_message, $this->_context);
-        $this->assertEquals($this->getMessage(), $log->getLastMessage());
-    }
-
-    private function initLog()
-    {
-        $log = new Log('/tmp/php.log');
-
-        return $log;
-    }
-
-    private function getMessage()
-    {
-        $this->_context['error_message'] = $this->_message;
-
-        return \json_encode($this->_context);
-    }
-}