diff --git a/psalm.xml.dist b/psalm.xml.dist
index 502f940b3..ea60216a6 100644
--- a/psalm.xml.dist
+++ b/psalm.xml.dist
@@ -10,7 +10,6 @@
         <directory name="src" />
         <ignoreFiles>
             <directory name="vendor" />
-            <file name="src/Util/ClockMock.php" />
         </ignoreFiles>
     </projectFiles>
 
diff --git a/tests/BreadcrumbTest.php b/tests/BreadcrumbTest.php
index 77329f191..932b49a1c 100644
--- a/tests/BreadcrumbTest.php
+++ b/tests/BreadcrumbTest.php
@@ -6,7 +6,7 @@
 
 use PHPUnit\Framework\TestCase;
 use Sentry\Breadcrumb;
-use Sentry\Util\ClockMock;
+use Sentry\Tests\TestUtil\ClockMock;
 
 final class BreadcrumbTest extends TestCase
 {
diff --git a/tests/Metrics/MetricsTest.php b/tests/Metrics/MetricsTest.php
index 3de480657..760bf90c0 100644
--- a/tests/Metrics/MetricsTest.php
+++ b/tests/Metrics/MetricsTest.php
@@ -11,9 +11,9 @@
 use Sentry\Options;
 use Sentry\SentrySdk;
 use Sentry\State\Hub;
+use Sentry\Tests\TestUtil\ClockMock;
 use Sentry\Tracing\SpanContext;
 use Sentry\Tracing\TransactionContext;
-use Sentry\Util\ClockMock;
 
 use function Sentry\metrics;
 
diff --git a/tests/Serializer/PayloadSerializerTest.php b/tests/Serializer/PayloadSerializerTest.php
index 3d3cc4c75..53f3235e8 100644
--- a/tests/Serializer/PayloadSerializerTest.php
+++ b/tests/Serializer/PayloadSerializerTest.php
@@ -28,6 +28,7 @@
 use Sentry\Serializer\PayloadSerializer;
 use Sentry\Severity;
 use Sentry\Stacktrace;
+use Sentry\Tests\TestUtil\ClockMock;
 use Sentry\Tracing\DynamicSamplingContext;
 use Sentry\Tracing\Span;
 use Sentry\Tracing\SpanId;
@@ -36,7 +37,6 @@
 use Sentry\Tracing\TransactionMetadata;
 use Sentry\Unit;
 use Sentry\UserDataBag;
-use Sentry\Util\ClockMock;
 use Sentry\Util\SentryUid;
 
 /**
diff --git a/src/Util/ClockMock.php b/tests/TestUtil/ClockMock.php
similarity index 99%
rename from src/Util/ClockMock.php
rename to tests/TestUtil/ClockMock.php
index 004291d39..73809f591 100644
--- a/src/Util/ClockMock.php
+++ b/tests/TestUtil/ClockMock.php
@@ -26,7 +26,7 @@
  * THE SOFTWARE.
  */
 
-namespace Sentry\Util;
+namespace Sentry\Tests\TestUtil;
 
 /**
  * @author Nicolas Grekas <p@tchwork.com>
diff --git a/tests/Tracing/SpanTest.php b/tests/Tracing/SpanTest.php
index e0db7c6d5..cf8956172 100644
--- a/tests/Tracing/SpanTest.php
+++ b/tests/Tracing/SpanTest.php
@@ -5,13 +5,13 @@
 namespace Sentry\Tests\Tracing;
 
 use PHPUnit\Framework\TestCase;
+use Sentry\Tests\TestUtil\ClockMock;
 use Sentry\Tracing\Span;
 use Sentry\Tracing\SpanContext;
 use Sentry\Tracing\SpanId;
 use Sentry\Tracing\TraceId;
 use Sentry\Tracing\Transaction;
 use Sentry\Tracing\TransactionContext;
-use Sentry\Util\ClockMock;
 
 /**
  * @group time-sensitive
diff --git a/tests/Tracing/TransactionTest.php b/tests/Tracing/TransactionTest.php
index 61c8d44f6..76a2c3aab 100644
--- a/tests/Tracing/TransactionTest.php
+++ b/tests/Tracing/TransactionTest.php
@@ -12,11 +12,10 @@
 use Sentry\Options;
 use Sentry\State\Hub;
 use Sentry\State\HubInterface;
-use Sentry\Tracing\Span;
+use Sentry\Tests\TestUtil\ClockMock;
 use Sentry\Tracing\SpanContext;
 use Sentry\Tracing\Transaction;
 use Sentry\Tracing\TransactionContext;
-use Sentry\Util\ClockMock;
 
 /**
  * @group time-sensitive
diff --git a/tests/Transport/HttpTransportTest.php b/tests/Transport/HttpTransportTest.php
index 66d564b85..1d34137ae 100644
--- a/tests/Transport/HttpTransportTest.php
+++ b/tests/Transport/HttpTransportTest.php
@@ -14,9 +14,9 @@
 use Sentry\Options;
 use Sentry\Profiling\Profile;
 use Sentry\Serializer\PayloadSerializerInterface;
+use Sentry\Tests\TestUtil\ClockMock;
 use Sentry\Transport\HttpTransport;
 use Sentry\Transport\ResultStatus;
-use Sentry\Util\ClockMock;
 
 final class HttpTransportTest extends TestCase
 {
diff --git a/tests/Transport/RateLimiterTest.php b/tests/Transport/RateLimiterTest.php
index c1112e9ab..6a34556c7 100644
--- a/tests/Transport/RateLimiterTest.php
+++ b/tests/Transport/RateLimiterTest.php
@@ -7,8 +7,8 @@
 use PHPUnit\Framework\TestCase;
 use Sentry\EventType;
 use Sentry\HttpClient\Response;
+use Sentry\Tests\TestUtil\ClockMock;
 use Sentry\Transport\RateLimiter;
-use Sentry\Util\ClockMock;
 
 /**
  * @group time-sensitive
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index 49e701ceb..a3a416679 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -5,9 +5,9 @@
 use Sentry\Breadcrumb;
 use Sentry\Event;
 use Sentry\Metrics\Metrics;
+use Sentry\Tests\TestUtil\ClockMock;
 use Sentry\Tracing\Span;
 use Sentry\Transport\RateLimiter;
-use Sentry\Util\ClockMock;
 
 require_once __DIR__ . '/../vendor/autoload.php';