diff --git a/composer.json b/composer.json
index 977da89..8b020b7 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
 		"nette/di": "^2.4.10 || ^3.0",
 		"nette/routing": "^3.0.0",
 		"tracy/tracy": "^2.5 || ^3.0",
-		"kdyby/strict-objects": "^2.0",
+		"nette/utils": "~3.1.0",
 		"symfony/console": "~2.3 || ^3.0 || < 4.3"
 	},
 	"require-dev": {
diff --git a/src/Application.php b/src/Application.php
index df0fadb..7747d77 100644
--- a/src/Application.php
+++ b/src/Application.php
@@ -27,7 +27,7 @@
 class Application extends \Symfony\Component\Console\Application
 {
 
-	use \Kdyby\StrictObjects\Scream;
+	use \Nette\SmartObject;
 
 	public const CLI_SAPI = 'cli';
 	public const INPUT_ERROR_EXIT_CODE = 253;
diff --git a/src/CliResponse.php b/src/CliResponse.php
index 0813db6..95a55de 100644
--- a/src/CliResponse.php
+++ b/src/CliResponse.php
@@ -19,7 +19,7 @@
 class CliResponse implements \Nette\Application\IResponse
 {
 
-	use \Kdyby\StrictObjects\Scream;
+	use \Nette\SmartObject;
 
 	/**
 	 * @var int
diff --git a/src/CliRouter.php b/src/CliRouter.php
index c7d37e7..2011cc8 100644
--- a/src/CliRouter.php
+++ b/src/CliRouter.php
@@ -20,7 +20,7 @@
 class CliRouter implements \Nette\Routing\Router
 {
 
-	use \Kdyby\StrictObjects\Scream;
+	use \Nette\SmartObject;
 
 	/**
 	 * @var string[]
diff --git a/src/ContainerHelper.php b/src/ContainerHelper.php
index c316e6b..a005557 100644
--- a/src/ContainerHelper.php
+++ b/src/ContainerHelper.php
@@ -17,7 +17,7 @@
 class ContainerHelper extends \Symfony\Component\Console\Helper\Helper
 {
 
-	use \Kdyby\StrictObjects\Scream;
+	use \Nette\SmartObject;
 
 	/**
 	 * @var \Nette\DI\Container
diff --git a/src/DI/BootstrapHelper.php b/src/DI/BootstrapHelper.php
index 7299c2c..593937e 100644
--- a/src/DI/BootstrapHelper.php
+++ b/src/DI/BootstrapHelper.php
@@ -39,7 +39,7 @@
 class BootstrapHelper
 {
 
-	use \Kdyby\StrictObjects\Scream;
+	use \Nette\SmartObject;
 
 	/**
 	 * @param \Nette\Configurator $configurator
diff --git a/src/Helpers/PresenterHelper.php b/src/Helpers/PresenterHelper.php
index 9852753..303a12b 100644
--- a/src/Helpers/PresenterHelper.php
+++ b/src/Helpers/PresenterHelper.php
@@ -17,7 +17,7 @@
 class PresenterHelper extends \Symfony\Component\Console\Helper\Helper
 {
 
-	use \Kdyby\StrictObjects\Scream;
+	use \Nette\SmartObject;
 
 	/**
 	 * @var \Nette\Application\Application
diff --git a/src/StringOutput.php b/src/StringOutput.php
index 27f4ef7..b1ab623 100644
--- a/src/StringOutput.php
+++ b/src/StringOutput.php
@@ -15,7 +15,7 @@
 class StringOutput extends \Symfony\Component\Console\Output\Output
 {
 
-	use \Kdyby\StrictObjects\Scream;
+	use \Nette\SmartObject;
 
 	/**
 	 * @var string
diff --git a/tests/KdybyTests/Console/data/AmbiguousCommand1.php b/tests/KdybyTests/Console/data/AmbiguousCommand1.php
index c75ba80..b25d2f5 100644
--- a/tests/KdybyTests/Console/data/AmbiguousCommand1.php
+++ b/tests/KdybyTests/Console/data/AmbiguousCommand1.php
@@ -11,7 +11,7 @@
 class AmbiguousCommand1 extends \Symfony\Component\Console\Command\Command
 {
 
-	use \Kdyby\StrictObjects\Scream;
+	use \Nette\SmartObject;
 
 	protected function configure()
 	{
diff --git a/tests/KdybyTests/Console/data/AmbiguousCommand2.php b/tests/KdybyTests/Console/data/AmbiguousCommand2.php
index b8c2091..f3762d1 100644
--- a/tests/KdybyTests/Console/data/AmbiguousCommand2.php
+++ b/tests/KdybyTests/Console/data/AmbiguousCommand2.php
@@ -11,7 +11,7 @@
 class AmbiguousCommand2 extends \Symfony\Component\Console\Command\Command
 {
 
-	use \Kdyby\StrictObjects\Scream;
+	use \Nette\SmartObject;
 
 	protected function configure()
 	{
diff --git a/tests/KdybyTests/Console/data/ArgCommand.php b/tests/KdybyTests/Console/data/ArgCommand.php
index 3f4de8f..672e06a 100644
--- a/tests/KdybyTests/Console/data/ArgCommand.php
+++ b/tests/KdybyTests/Console/data/ArgCommand.php
@@ -13,7 +13,7 @@
 class ArgCommand extends \Symfony\Component\Console\Command\Command
 {
 
-	use \Kdyby\StrictObjects\Scream;
+	use \Nette\SmartObject;
 
 	protected function configure()
 	{
diff --git a/tests/KdybyTests/Console/data/CliAppTester.php b/tests/KdybyTests/Console/data/CliAppTester.php
index 7e9cff7..5af3e22 100644
--- a/tests/KdybyTests/Console/data/CliAppTester.php
+++ b/tests/KdybyTests/Console/data/CliAppTester.php
@@ -19,7 +19,7 @@
 class CliAppTester
 {
 
-	use \Kdyby\StrictObjects\Scream;
+	use \Nette\SmartObject;
 
 	/**
 	 * @var \Symfony\Component\Console\Application
diff --git a/tests/KdybyTests/Console/data/CommandMock.php b/tests/KdybyTests/Console/data/CommandMock.php
index bb1b95a..122de44 100644
--- a/tests/KdybyTests/Console/data/CommandMock.php
+++ b/tests/KdybyTests/Console/data/CommandMock.php
@@ -7,7 +7,7 @@
 class CommandMock extends \Symfony\Component\Console\Command\Command
 {
 
-	use \Kdyby\StrictObjects\Scream;
+	use \Nette\SmartObject;
 
 	protected function configure()
 	{
diff --git a/tests/KdybyTests/Console/data/ConsoleListener.php b/tests/KdybyTests/Console/data/ConsoleListener.php
index 977b641..3bbcc8c 100644
--- a/tests/KdybyTests/Console/data/ConsoleListener.php
+++ b/tests/KdybyTests/Console/data/ConsoleListener.php
@@ -11,7 +11,7 @@
 class ConsoleListener implements \Kdyby\Events\Subscriber
 {
 
-	use \Kdyby\StrictObjects\Scream;
+	use \Nette\SmartObject;
 
 	/**
 	 * @var string[][]
diff --git a/tests/KdybyTests/Console/data/NamespaceAmbiguousCommand1.php b/tests/KdybyTests/Console/data/NamespaceAmbiguousCommand1.php
index 1ef5b23..df31134 100644
--- a/tests/KdybyTests/Console/data/NamespaceAmbiguousCommand1.php
+++ b/tests/KdybyTests/Console/data/NamespaceAmbiguousCommand1.php
@@ -11,7 +11,7 @@
 class NamespaceAmbiguousCommand1 extends \Symfony\Component\Console\Command\Command
 {
 
-	use \Kdyby\StrictObjects\Scream;
+	use \Nette\SmartObject;
 
 	protected function configure()
 	{
diff --git a/tests/KdybyTests/Console/data/NamespaceAmbiguousCommand2.php b/tests/KdybyTests/Console/data/NamespaceAmbiguousCommand2.php
index f3c8bf4..671dd85 100644
--- a/tests/KdybyTests/Console/data/NamespaceAmbiguousCommand2.php
+++ b/tests/KdybyTests/Console/data/NamespaceAmbiguousCommand2.php
@@ -11,7 +11,7 @@
 class NamespaceAmbiguousCommand2 extends \Symfony\Component\Console\Command\Command
 {
 
-	use \Kdyby\StrictObjects\Scream;
+	use \Nette\SmartObject;
 
 	protected function configure()
 	{
diff --git a/tests/KdybyTests/Console/data/SameArgsCommandOne.php b/tests/KdybyTests/Console/data/SameArgsCommandOne.php
index 3c35393..cb00f17 100644
--- a/tests/KdybyTests/Console/data/SameArgsCommandOne.php
+++ b/tests/KdybyTests/Console/data/SameArgsCommandOne.php
@@ -11,7 +11,7 @@
 class SameArgsCommandOne extends \Symfony\Component\Console\Command\Command
 {
 
-	use \Kdyby\StrictObjects\Scream;
+	use \Nette\SmartObject;
 
 	/**
 	 * @var \KdybyTests\Console\ArgCommand
diff --git a/tests/KdybyTests/Console/data/SameArgsCommandTwo.php b/tests/KdybyTests/Console/data/SameArgsCommandTwo.php
index bb441ed..2829db1 100644
--- a/tests/KdybyTests/Console/data/SameArgsCommandTwo.php
+++ b/tests/KdybyTests/Console/data/SameArgsCommandTwo.php
@@ -11,7 +11,7 @@
 class SameArgsCommandTwo extends \Symfony\Component\Console\Command\Command
 {
 
-	use \Kdyby\StrictObjects\Scream;
+	use \Nette\SmartObject;
 
 	/**
 	 * @var \KdybyTests\Console\ArgCommand
diff --git a/tests/KdybyTests/Console/data/TypoCommand.php b/tests/KdybyTests/Console/data/TypoCommand.php
index cd2efe6..f97efb9 100644
--- a/tests/KdybyTests/Console/data/TypoCommand.php
+++ b/tests/KdybyTests/Console/data/TypoCommand.php
@@ -11,7 +11,7 @@
 class TypoCommand extends \Symfony\Component\Console\Command\Command
 {
 
-	use \Kdyby\StrictObjects\Scream;
+	use \Nette\SmartObject;
 
 	protected function configure()
 	{