diff --git a/composer.json b/composer.json
index dc2aaef..2ec2588 100644
--- a/composer.json
+++ b/composer.json
@@ -33,9 +33,6 @@
         "bamarni/composer-bin-plugin": "^1.3",
         "ergebnis/composer-normalize": "^2.0.1",
         "nyholm/psr7": "^1.0",
-        "php-http/httplug": "^2.0",
-        "php-http/message-factory": "^1.0",
-        "php-http/mock-client": "^1.3",
         "symfony/http-client": "^4.4 || ^5.0"
     },
     "suggest": {
diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index c3759a0..c1ca870 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -240,31 +240,6 @@ parameters:
 			count: 1
 			path: src/Connection/ConnectionInterface.php
 
-		-
-			message: "#^Method Nucleos\\\\LastFm\\\\Connection\\\\HTTPlugConnection\\:\\:getPageBody\\(\\) has parameter \\$params with no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Connection/HTTPlugConnection.php
-
-		-
-			message: "#^Method Nucleos\\\\LastFm\\\\Connection\\\\HTTPlugConnection\\:\\:call\\(\\) has parameter \\$params with no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Connection/HTTPlugConnection.php
-
-		-
-			message: "#^Method Nucleos\\\\LastFm\\\\Connection\\\\HTTPlugConnection\\:\\:call\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Connection/HTTPlugConnection.php
-
-		-
-			message: "#^Method Nucleos\\\\LastFm\\\\Connection\\\\HTTPlugConnection\\:\\:createRequest\\(\\) has parameter \\$params with no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Connection/HTTPlugConnection.php
-
-		-
-			message: "#^Method Nucleos\\\\LastFm\\\\Connection\\\\HTTPlugConnection\\:\\:parseResponse\\(\\) return type has no value type specified in iterable type array\\.$#"
-			count: 1
-			path: src/Connection/HTTPlugConnection.php
-
 		-
 			message: "#^Method Nucleos\\\\LastFm\\\\Connection\\\\PsrClientConnection\\:\\:getPageBody\\(\\) has parameter \\$params with no value type specified in iterable type array\\.$#"
 			count: 1
diff --git a/src/Connection/HTTPlugConnection.php b/src/Connection/HTTPlugConnection.php
deleted file mode 100644
index 76c41ed..0000000
--- a/src/Connection/HTTPlugConnection.php
+++ /dev/null
@@ -1,115 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-/*
- * (c) Christian Gripp <mail@core23.de>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Nucleos\LastFm\Connection;
-
-use Http\Client\Exception;
-use Http\Client\HttpClient;
-use Http\Message\MessageFactory;
-use Nucleos\LastFm\Exception\ApiException;
-use Psr\Http\Message\RequestInterface;
-use Psr\Http\Message\ResponseInterface;
-
-/**
- * @deprecated use PsrClientConnection instead
- */
-final class HTTPlugConnection implements ConnectionInterface
-{
-    /**
-     * @var HttpClient
-     */
-    private $client;
-
-    /**
-     * @var MessageFactory
-     */
-    private $messageFactory;
-
-    /**
-     * @var string
-     */
-    private $endpoint;
-
-    /**
-     * Initialize client.
-     */
-    public function __construct(HttpClient $client, MessageFactory $messageFactory, string $endpoint = ConnectionInterface::DEFAULT_ENDPOINT)
-    {
-        $this->client         = $client;
-        $this->messageFactory = $messageFactory;
-        $this->endpoint       = $endpoint;
-    }
-
-    public function getPageBody(string $url, array $params = [], string $method = 'GET'): ?string
-    {
-        $request  = $this->createRequest($method, $url, $params);
-
-        try {
-            $response = $this->client->sendRequest($request);
-        } catch (Exception $e) {
-            throw new ApiException(
-                sprintf('Error fetching page body for url: %s', (string) $request->getUri()),
-                $e->getCode(),
-                $e
-            );
-        }
-
-        if ($response->getStatusCode() >= 400) {
-            return null;
-        }
-
-        return $response->getBody()->getContents();
-    }
-
-    public function call(string $url, array $params = [], string $method = 'GET'): array
-    {
-        $params  = array_merge($params, ['format' => 'json']);
-        $request = $this->createRequest($method, $this->endpoint, $params);
-
-        try {
-            $response = $this->client->sendRequest($request);
-
-            // Parse response
-            return $this->parseResponse($response);
-        } catch (ApiException $e) {
-            throw $e;
-        } catch (\Exception $e) {
-            throw new ApiException('Technical error occurred.', 500, $e);
-        } catch (Exception $e) {
-            throw new ApiException('Technical error occurred.', $e->getCode(), $e);
-        }
-    }
-
-    private function createRequest(string $method, string $url, array $params): RequestInterface
-    {
-        $query = http_build_query($params);
-
-        if ('POST' === $method) {
-            return $this->messageFactory->createRequest($method, $url, [], $query);
-        }
-
-        return $this->messageFactory->createRequest($method, $url.'?'.$query);
-    }
-
-    /**
-     * @throws ApiException
-     */
-    private function parseResponse(ResponseInterface $response): array
-    {
-        $array = json_decode($response->getBody()->getContents(), true);
-
-        if (\is_array($array) && \array_key_exists('error', $array) && \array_key_exists('message', $array)) {
-            throw new ApiException($array['message'], $array['error']);
-        }
-
-        return $array;
-    }
-}