diff --git a/composer.json b/composer.json
index d8e863cc8..40e58869b 100644
--- a/composer.json
+++ b/composer.json
@@ -39,7 +39,6 @@
         "phpbench/phpbench": "^1.0",
         "phpstan/phpstan": "^1.3",
         "phpunit/phpunit": "^8.5|^9.6",
-        "symfony/phpunit-bridge": "^5.2|6.4.25|7.3.3",
         "vimeo/psalm": "^4.17"
     },
     "suggest": {
diff --git a/phpstan.neon b/phpstan.neon
index 91af9c48e..61e18b96c 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -10,6 +10,7 @@ parameters:
     excludePaths:
         - tests/resources
         - tests/Fixtures
+        - src/Util/ClockMock.php
     dynamicConstantNames:
         - Monolog\Logger::API
     bootstrapFiles:
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index d064f8775..8d5384d66 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -34,10 +34,6 @@
         </whitelist>
     </filter>
 
-    <listeners>
-        <listener class="\Symfony\Bridge\PhpUnit\SymfonyTestsListener" />
-    </listeners>
-
     <extensions>
         <extension class="Sentry\Tests\SentrySdkExtension" />
     </extensions>
diff --git a/psalm.xml.dist b/psalm.xml.dist
index ea60216a6..502f940b3 100644
--- a/psalm.xml.dist
+++ b/psalm.xml.dist
@@ -10,6 +10,7 @@
         <directory name="src" />
         <ignoreFiles>
             <directory name="vendor" />
+            <file name="src/Util/ClockMock.php" />
         </ignoreFiles>
     </projectFiles>
 
diff --git a/src/Util/ClockMock.php b/src/Util/ClockMock.php
new file mode 100644
index 000000000..ea3f18f18
--- /dev/null
+++ b/src/Util/ClockMock.php
@@ -0,0 +1,202 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Original file: https://github.com/symfony/symfony/blob/9c413a356ccb3c982add8fa2b19813927157aa0e/src/Symfony/Bridge/PhpUnit/ClockMock.php#L18
+ *
+ * Copyright (c) 2004-present Fabien Potencier
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is furnished
+ * to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+namespace Sentry\Util;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ * @author Dominic Tubach <dominic.tubach@to.com>
+ */
+class ClockMock
+{
+    private static $now;
+
+    public static function withClockMock($enable = null): ?bool
+    {
+        if ($enable === null) {
+            return self::$now !== null;
+        }
+
+        self::$now = is_numeric($enable) ? (float) $enable : ($enable ? microtime(true) : null);
+
+        return null;
+    }
+
+    public static function time(): int
+    {
+        if (self::$now === null) {
+            return time();
+        }
+
+        return (int) self::$now;
+    }
+
+    public static function sleep($s): int
+    {
+        if (self::$now === null) {
+            return sleep($s);
+        }
+
+        self::$now += (int) $s;
+
+        return 0;
+    }
+
+    public static function usleep($us): void
+    {
+        if (self::$now === null) {
+            usleep($us);
+        } else {
+            self::$now += $us / 1000000;
+        }
+    }
+
+    /**
+     * @return string|float
+     */
+    public static function microtime($asFloat = false)
+    {
+        if (self::$now === null) {
+            return microtime($asFloat);
+        }
+
+        if ($asFloat) {
+            return self::$now;
+        }
+
+        return \sprintf('%0.6f00 %d', self::$now - (int) self::$now, (int) self::$now);
+    }
+
+    public static function date($format, $timestamp = null): string
+    {
+        if ($timestamp === null) {
+            $timestamp = self::time();
+        }
+
+        return date($format, $timestamp);
+    }
+
+    public static function gmdate($format, $timestamp = null): string
+    {
+        if ($timestamp === null) {
+            $timestamp = self::time();
+        }
+
+        return gmdate($format, $timestamp);
+    }
+
+    /**
+     * @return array|int|float
+     */
+    public static function hrtime($asNumber = false)
+    {
+        $ns = (self::$now - (int) self::$now) * 1000000000;
+
+        if ($asNumber) {
+            $number = \sprintf('%d%d', (int) self::$now, $ns);
+
+            return \PHP_INT_SIZE === 8 ? (int) $number : (float) $number;
+        }
+
+        return [(int) self::$now, (int) $ns];
+    }
+
+    /**
+     * @return false|int
+     */
+    public static function strtotime(string $datetime, ?int $timestamp = null)
+    {
+        if ($timestamp === null) {
+            $timestamp = self::time();
+        }
+
+        return strtotime($datetime, $timestamp);
+    }
+
+    public static function register($class): void
+    {
+        $self = static::class;
+
+        $mockedNs = [substr($class, 0, strrpos($class, '\\'))];
+        if (strpos($class, '\\Tests\\') > 0) {
+            $ns = str_replace('\\Tests\\', '\\', $class);
+            $mockedNs[] = substr($ns, 0, strrpos($ns, '\\'));
+        } elseif (str_starts_with($class, 'Tests\\')) {
+            $mockedNs[] = substr($class, 6, strrpos($class, '\\') - 6);
+        }
+        foreach ($mockedNs as $ns) {
+            if (\function_exists($ns . '\time')) {
+                continue;
+            }
+            eval(<<<EOPHP
+namespace $ns;
+
+function time()
+{
+    return \\$self::time();
+}
+
+function microtime(\$asFloat = false)
+{
+    return \\$self::microtime(\$asFloat);
+}
+
+function sleep(\$s)
+{
+    return \\$self::sleep(\$s);
+}
+
+function usleep(\$us)
+{
+    \\$self::usleep(\$us);
+}
+
+function date(\$format, \$timestamp = null)
+{
+    return \\$self::date(\$format, \$timestamp);
+}
+
+function gmdate(\$format, \$timestamp = null)
+{
+    return \\$self::gmdate(\$format, \$timestamp);
+}
+
+function hrtime(\$asNumber = false)
+{
+    return \\$self::hrtime(\$asNumber);
+}
+
+function strtotime(\$datetime, \$timestamp = null)
+{
+    return \\$self::strtotime(\$datetime, \$timestamp);
+}
+EOPHP
+            );
+        }
+    }
+}
diff --git a/tests/BreadcrumbTest.php b/tests/BreadcrumbTest.php
index 25bba3ea0..77329f191 100644
--- a/tests/BreadcrumbTest.php
+++ b/tests/BreadcrumbTest.php
@@ -6,7 +6,7 @@
 
 use PHPUnit\Framework\TestCase;
 use Sentry\Breadcrumb;
-use Symfony\Bridge\PhpUnit\ClockMock;
+use Sentry\Util\ClockMock;
 
 final class BreadcrumbTest extends TestCase
 {
diff --git a/tests/ClientTest.php b/tests/ClientTest.php
index 5bc005fb1..a6cf67c8b 100644
--- a/tests/ClientTest.php
+++ b/tests/ClientTest.php
@@ -24,12 +24,9 @@
 use Sentry\Transport\Result;
 use Sentry\Transport\ResultStatus;
 use Sentry\Transport\TransportInterface;
-use Symfony\Bridge\PhpUnit\ExpectDeprecationTrait;
 
 final class ClientTest extends TestCase
 {
-    use ExpectDeprecationTrait;
-
     public function testConstructorSetupsIntegrations(): void
     {
         $integrationCalled = false;
diff --git a/tests/DsnTest.php b/tests/DsnTest.php
index ee091a0f2..f8bb169d8 100644
--- a/tests/DsnTest.php
+++ b/tests/DsnTest.php
@@ -6,12 +6,9 @@
 
 use PHPUnit\Framework\TestCase;
 use Sentry\Dsn;
-use Symfony\Bridge\PhpUnit\ExpectDeprecationTrait;
 
 final class DsnTest extends TestCase
 {
-    use ExpectDeprecationTrait;
-
     /**
      * @dataProvider createFromStringDataProvider
      */
diff --git a/tests/Metrics/MetricsTest.php b/tests/Metrics/MetricsTest.php
index 654156c5c..1e33a53d5 100644
--- a/tests/Metrics/MetricsTest.php
+++ b/tests/Metrics/MetricsTest.php
@@ -13,7 +13,7 @@
 use Sentry\State\Hub;
 use Sentry\Tracing\SpanContext;
 use Sentry\Tracing\TransactionContext;
-use Symfony\Bridge\PhpUnit\ClockMock;
+use Sentry\Util\ClockMock;
 
 use function Sentry\metrics;
 
diff --git a/tests/OptionsTest.php b/tests/OptionsTest.php
index 4bc7c7fa4..fed07e9bb 100644
--- a/tests/OptionsTest.php
+++ b/tests/OptionsTest.php
@@ -11,13 +11,10 @@
 use Sentry\Options;
 use Sentry\Serializer\PayloadSerializer;
 use Sentry\Transport\HttpTransport;
-use Symfony\Bridge\PhpUnit\ExpectDeprecationTrait;
 use Symfony\Component\OptionsResolver\Exception\InvalidOptionsException;
 
 final class OptionsTest extends TestCase
 {
-    use ExpectDeprecationTrait;
-
     /**
      * @var int
      */
diff --git a/tests/Serializer/PayloadSerializerTest.php b/tests/Serializer/PayloadSerializerTest.php
index 141fde32f..1855bf487 100644
--- a/tests/Serializer/PayloadSerializerTest.php
+++ b/tests/Serializer/PayloadSerializerTest.php
@@ -32,8 +32,8 @@
 use Sentry\Tracing\TraceId;
 use Sentry\Tracing\TransactionMetadata;
 use Sentry\UserDataBag;
+use Sentry\Util\ClockMock;
 use Sentry\Util\SentryUid;
-use Symfony\Bridge\PhpUnit\ClockMock;
 
 /**
  * @group time-sensitive
diff --git a/tests/Tracing/SpanTest.php b/tests/Tracing/SpanTest.php
index 140c3fe81..987feffb5 100644
--- a/tests/Tracing/SpanTest.php
+++ b/tests/Tracing/SpanTest.php
@@ -11,7 +11,7 @@
 use Sentry\Tracing\TraceId;
 use Sentry\Tracing\Transaction;
 use Sentry\Tracing\TransactionContext;
-use Symfony\Bridge\PhpUnit\ClockMock;
+use Sentry\Util\ClockMock;
 
 /**
  * @group time-sensitive
diff --git a/tests/Tracing/TransactionContextTest.php b/tests/Tracing/TransactionContextTest.php
index eb5e12cbc..93dd5bfc5 100644
--- a/tests/Tracing/TransactionContextTest.php
+++ b/tests/Tracing/TransactionContextTest.php
@@ -11,12 +11,9 @@
 use Sentry\Tracing\TransactionContext;
 use Sentry\Tracing\TransactionMetadata;
 use Sentry\Tracing\TransactionSource;
-use Symfony\Bridge\PhpUnit\ExpectDeprecationTrait;
 
 final class TransactionContextTest extends TestCase
 {
-    use ExpectDeprecationTrait;
-
     public function testGettersAndSetters(): void
     {
         $transactionContext = new TransactionContext();
diff --git a/tests/Tracing/TransactionTest.php b/tests/Tracing/TransactionTest.php
index 262559c4b..61c8d44f6 100644
--- a/tests/Tracing/TransactionTest.php
+++ b/tests/Tracing/TransactionTest.php
@@ -16,7 +16,7 @@
 use Sentry\Tracing\SpanContext;
 use Sentry\Tracing\Transaction;
 use Sentry\Tracing\TransactionContext;
-use Symfony\Bridge\PhpUnit\ClockMock;
+use Sentry\Util\ClockMock;
 
 /**
  * @group time-sensitive
diff --git a/tests/Transport/HttpTransportTest.php b/tests/Transport/HttpTransportTest.php
index 148c3bbb6..942fb9b49 100644
--- a/tests/Transport/HttpTransportTest.php
+++ b/tests/Transport/HttpTransportTest.php
@@ -15,7 +15,7 @@
 use Sentry\Serializer\PayloadSerializerInterface;
 use Sentry\Transport\HttpTransport;
 use Sentry\Transport\ResultStatus;
-use Symfony\Bridge\PhpUnit\ClockMock;
+use Sentry\Util\ClockMock;
 
 final class HttpTransportTest extends TestCase
 {
diff --git a/tests/Transport/RateLimiterTest.php b/tests/Transport/RateLimiterTest.php
index 441aa2eff..c1112e9ab 100644
--- a/tests/Transport/RateLimiterTest.php
+++ b/tests/Transport/RateLimiterTest.php
@@ -8,7 +8,7 @@
 use Sentry\EventType;
 use Sentry\HttpClient\Response;
 use Sentry\Transport\RateLimiter;
-use Symfony\Bridge\PhpUnit\ClockMock;
+use Sentry\Util\ClockMock;
 
 /**
  * @group time-sensitive
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index e1f3f6400..49e701ceb 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -7,7 +7,7 @@
 use Sentry\Metrics\Metrics;
 use Sentry\Tracing\Span;
 use Sentry\Transport\RateLimiter;
-use Symfony\Bridge\PhpUnit\ClockMock;
+use Sentry\Util\ClockMock;
 
 require_once __DIR__ . '/../vendor/autoload.php';
 
@@ -27,3 +27,4 @@
 ClockMock::register(Span::class);
 ClockMock::register(RateLimiter::class);
 ClockMock::register(Metrics::class);
+ClockMock::register(Sentry\Serializer\PayloadSerializer::class);