diff --git a/src/Drivers/Thermostat.php b/src/Drivers/Thermostat.php
index 1ba9f89..6f5d160 100644
--- a/src/Drivers/Thermostat.php
+++ b/src/Drivers/Thermostat.php
@@ -114,7 +114,7 @@ public function __construct(
 		private readonly VirtualThermostat\Logger $logger,
 		private readonly DevicesModels\Configuration\Channels\Repository $channelsConfigurationRepository,
 		private readonly DevicesModels\States\ChannelPropertiesManager $channelPropertiesStatesManager,
-		private readonly DateTimeFactory\Factory $dateTimeFactory,
+		private readonly DateTimeFactory\Clock $clock,
 	)
 	{
 		$this->presetMode = Types\Preset::MANUAL;
@@ -395,7 +395,7 @@ public function connect(): Promise\PromiseInterface
 		}
 
 		$this->connected = true;
-		$this->connectedAt = $this->dateTimeFactory->getNow();
+		$this->connectedAt = $this->clock->getNow();
 
 		return Promise\resolve(true);
 	}
@@ -458,7 +458,7 @@ public function process(): Promise\PromiseInterface
 			return Promise\reject(new Exceptions\InvalidState('Thermostat device is not connected'));
 		}
 
-		$this->lastProcessedTime = $this->dateTimeFactory->getNow();
+		$this->lastProcessedTime = $this->clock->getNow();
 
 		if ($this->hvacMode === null || $this->presetMode === null) {
 			$this->stop('Thermostat mode is not configured');
@@ -888,7 +888,7 @@ public function notifyState(
 					if (
 						$this->lastProcessedTime instanceof DateTimeInterface
 						&& (
-							$this->dateTimeFactory->getNow()->getTimestamp() - $this->lastProcessedTime->getTimestamp()
+							$this->clock->getNow()->getTimestamp() - $this->lastProcessedTime->getTimestamp()
 							< self::PROCESSING_DEBOUNCE_DELAY
 						)
 					) {
@@ -914,7 +914,7 @@ public function notifyState(
 					if (
 						$this->lastProcessedTime instanceof DateTimeInterface
 						&& (
-							$this->dateTimeFactory->getNow()->getTimestamp() - $this->lastProcessedTime->getTimestamp()
+							$this->clock->getNow()->getTimestamp() - $this->lastProcessedTime->getTimestamp()
 							< self::PROCESSING_DEBOUNCE_DELAY
 						)
 					) {
@@ -947,7 +947,7 @@ public function notifyState(
 					if (
 						$this->lastProcessedTime instanceof DateTimeInterface
 						&& (
-							$this->dateTimeFactory->getNow()->getTimestamp() - $this->lastProcessedTime->getTimestamp()
+							$this->clock->getNow()->getTimestamp() - $this->lastProcessedTime->getTimestamp()
 							< self::PROCESSING_DEBOUNCE_DELAY
 						)
 					) {
@@ -974,7 +974,7 @@ public function notifyState(
 						if (
 							$this->lastProcessedTime instanceof DateTimeInterface
 							&& (
-								$this->dateTimeFactory->getNow()->getTimestamp() - $this->lastProcessedTime->getTimestamp()
+								$this->clock->getNow()->getTimestamp() - $this->lastProcessedTime->getTimestamp()
 								< self::PROCESSING_DEBOUNCE_DELAY
 							)
 						) {
@@ -1006,7 +1006,7 @@ public function notifyState(
 						if (
 							$this->lastProcessedTime instanceof DateTimeInterface
 							&& (
-								$this->dateTimeFactory->getNow()->getTimestamp() - $this->lastProcessedTime->getTimestamp()
+								$this->clock->getNow()->getTimestamp() - $this->lastProcessedTime->getTimestamp()
 								< self::PROCESSING_DEBOUNCE_DELAY
 							)
 						) {
@@ -1038,7 +1038,7 @@ public function notifyState(
 						if (
 							$this->lastProcessedTime instanceof DateTimeInterface
 							&& (
-								$this->dateTimeFactory->getNow()->getTimestamp() - $this->lastProcessedTime->getTimestamp()
+								$this->clock->getNow()->getTimestamp() - $this->lastProcessedTime->getTimestamp()
 								< self::PROCESSING_DEBOUNCE_DELAY
 							)
 						) {
diff --git a/tests/cases/unit/DbTestCase.php b/tests/cases/unit/DbTestCase.php
index 9988211..75ffd03 100644
--- a/tests/cases/unit/DbTestCase.php
+++ b/tests/cases/unit/DbTestCase.php
@@ -2,16 +2,13 @@
 
 namespace FastyBird\Addon\VirtualThermostat\Tests\Cases\Unit;
 
-use DateTimeImmutable;
 use Doctrine\DBAL;
 use Doctrine\ORM;
 use Error;
 use FastyBird\Addon\VirtualThermostat\DI;
 use FastyBird\Addon\VirtualThermostat\Exceptions;
-use FastyBird\DateTimeFactory;
 use FastyBird\Library\Application\Boot as ApplicationBoot;
 use FastyBird\Library\Application\Exceptions as ApplicationExceptions;
-use FastyBird\Library\Application\Utilities as ApplicationUtilities;
 use IPub\DoctrineCrud;
 use Nette;
 use Nettrine\ORM as NettrineORM;
@@ -49,41 +46,11 @@ abstract class DbTestCase extends TestCase
 	/** @var array<string> */
 	private array $neonFiles = [];
 
-	/**
-	 * @throws ApplicationExceptions\InvalidArgument
-	 * @throws Exceptions\InvalidArgument
-	 * @throws Nette\DI\MissingServiceException
-	 * @throws RuntimeException
-	 * @throws Error
-	 */
 	public function setUp(): void
 	{
 		$this->registerDatabaseSchemaFile(__DIR__ . '/../../sql/dummy.data.sql');
 
 		parent::setUp();
-
-		$dateTimeFactory = $this->createMock(DateTimeFactory\Factory::class);
-		$dateTimeFactory
-			->method('getNow')
-			->willReturn(new DateTimeImmutable('2020-04-01T12:00:00+00:00'));
-
-		$this->mockContainerService(
-			DateTimeFactory\Factory::class,
-			$dateTimeFactory,
-		);
-
-		$dateTimeProvider = $this->createMock(ApplicationUtilities\DateTimeProvider::class);
-		$dateTimeProvider
-			->method('getDate')
-			->willReturn($dateTimeFactory->getNow());
-		$dateTimeProvider
-			->method('getTimestamp')
-			->willReturn($dateTimeFactory->getNow()->getTimestamp());
-
-		$this->mockContainerService(
-			ApplicationUtilities\DateTimeProvider::class,
-			$dateTimeProvider,
-		);
 	}
 
 	protected function registerDatabaseSchemaFile(string $file): void
diff --git a/tests/common.neon b/tests/common.neon
index a43e941..ebe2f9b 100644
--- a/tests/common.neon
+++ b/tests/common.neon
@@ -121,4 +121,7 @@ fbSimpleAuth:
 
 fbJsonApi:
     meta:
-        copyright: FastyBird s.r.o
\ No newline at end of file
+        copyright: FastyBird s.r.o
+
+fbDateTimeFactory:
+    frozen: DateTimeImmutable('2020-04-01T12:00:00+00:00')
\ No newline at end of file