diff --git a/CHANGELOG.md b/CHANGELOG.md
index 00d33475..3f1d8bdb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 ## 1.3.1 under development
 
 - New #380: Add `TagReference::id()` method (@vjik)
+- Enh #384: Make `$config` parameter in `Container` constructor optional (@np25071984)
 
 ## 1.3.0 October 14, 2024
 
diff --git a/src/Container.php b/src/Container.php
index f8cb2864..6f4b7f91 100644
--- a/src/Container.php
+++ b/src/Container.php
@@ -74,8 +74,10 @@ final class Container implements ContainerInterface
      *
      * @throws InvalidConfigException If configuration is not valid.
      */
-    public function __construct(ContainerConfigInterface $config)
+    public function __construct(?ContainerConfigInterface $config = null)
     {
+        $config ??= ContainerConfig::create();
+
         $this->definitions = new DefinitionStorage(
             [
                 ContainerInterface::class => $this,
diff --git a/tests/Unit/CompositePsrContainerOverYiisoftTest.php b/tests/Unit/CompositePsrContainerOverYiisoftTest.php
index 568aa243..5cdc5890 100644
--- a/tests/Unit/CompositePsrContainerOverYiisoftTest.php
+++ b/tests/Unit/CompositePsrContainerOverYiisoftTest.php
@@ -110,9 +110,9 @@ public function testNotFoundException(): void
     {
         $compositeContainer = new CompositeContainer();
 
-        $container1 = new Container(ContainerConfig::create());
+        $container1 = new Container();
         $container1Id = spl_object_id($container1);
-        $container2 = new Container(ContainerConfig::create());
+        $container2 = new Container();
         $container2Id = spl_object_id($container2);
 
         $compositeContainer->attach($container1);
diff --git a/tests/Unit/CompositePsrContainerTestAbstract.php b/tests/Unit/CompositePsrContainerTestAbstract.php
index d72e1f2d..76f820dc 100644
--- a/tests/Unit/CompositePsrContainerTestAbstract.php
+++ b/tests/Unit/CompositePsrContainerTestAbstract.php
@@ -136,7 +136,7 @@ public function testTags(): void
     public function testDelegateLookup(): void
     {
         $compositeContainer = new CompositeContainer();
-        $firstContainer = new Container(ContainerConfig::create());
+        $firstContainer = new Container();
 
         $config = ContainerConfig::create()
             ->withDefinitions([
@@ -155,7 +155,7 @@ public function testDelegateLookup(): void
     public function testDelegateLookupUnionTypes(): void
     {
         $compositeContainer = new CompositeContainer();
-        $firstContainer = new Container(ContainerConfig::create());
+        $firstContainer = new Container();
 
         $config = ContainerConfig::create()
             ->withDefinitions([
diff --git a/tests/Unit/ContainerTest.php b/tests/Unit/ContainerTest.php
index e8020664..5a7672c6 100644
--- a/tests/Unit/ContainerTest.php
+++ b/tests/Unit/ContainerTest.php
@@ -60,6 +60,13 @@
  */
 final class ContainerTest extends TestCase
 {
+    public function testCanCreateWihtoutConfig(): void
+    {
+        $this->expectNotToPerformAssertions();
+
+        new Container();
+    }
+
     public function testSettingScalars(): void
     {
         $this->expectException(InvalidConfigException::class);
@@ -89,7 +96,7 @@ public function testIntegerKeys(): void
 
     public function testNullableClassDependency(): void
     {
-        $container = new Container(ContainerConfig::create());
+        $container = new Container();
 
         $this->expectException(NotFoundException::class);
         $container->get(NullableConcreteDependency::class);
@@ -111,7 +118,7 @@ public function testOptionalResolvableClassDependency(): void
 
     public function testOptionalNotResolvableClassDependency(): void
     {
-        $container = new Container(ContainerConfig::create());
+        $container = new Container();
 
         $this->assertTrue($container->has(OptionalConcreteDependency::class));
         $service = $container->get(OptionalConcreteDependency::class);
@@ -168,14 +175,14 @@ public static function dataUnionTypes(): array
     #[DataProvider('dataUnionTypes')]
     public function testUnionTypes(string $class): void
     {
-        $container = new Container(ContainerConfig::create());
+        $container = new Container();
 
         $this->assertTrue($container->has($class));
     }
 
     public function testClassExistsButIsNotResolvable(): void
     {
-        $container = new Container(ContainerConfig::create());
+        $container = new Container();
 
         $this->assertFalse($container->has('non_existing'));
         $this->assertFalse($container->has(Car::class));
@@ -195,14 +202,14 @@ public static function dataClassExistButIsNotResolvableWithUnionTypes(): array
     #[DataProvider('dataClassExistButIsNotResolvableWithUnionTypes')]
     public function testClassExistButIsNotResolvableWithUnionTypes(string $class): void
     {
-        $container = new Container(ContainerConfig::create());
+        $container = new Container();
 
         $this->assertFalse($container->has($class));
     }
 
     public function testWithoutDefinition(): void
     {
-        $container = new Container(ContainerConfig::create());
+        $container = new Container();
 
         $hasEngine = $container->has(EngineMarkOne::class);
         $this->assertTrue($hasEngine);
@@ -213,7 +220,7 @@ public function testWithoutDefinition(): void
 
     public function testCircularClassDependencyWithoutDefinition(): void
     {
-        $container = new Container(ContainerConfig::create());
+        $container = new Container();
         $this->expectException(CircularReferenceException::class);
         $container->get(Chicken::class);
     }
@@ -612,7 +619,7 @@ public function testFalsePositiveCircularReferenceWithClassID(): void
     {
         $this->expectNotToPerformAssertions();
 
-        $container = new Container(ContainerConfig::create());
+        $container = new Container();
 
         // Build an object
         $container->get(ColorPink::class);
@@ -639,7 +646,7 @@ public function testFalsePositiveCircularReferenceWithStringID(): void
     {
         $this->expectNotToPerformAssertions();
 
-        $container = new Container(ContainerConfig::create());
+        $container = new Container();
         try {
             // Build an object
             $container->get('test');
@@ -948,7 +955,7 @@ public function testThrowingNotFoundException(): void
     {
         $this->expectException(NotFoundException::class);
 
-        $container = new Container(ContainerConfig::create());
+        $container = new Container();
         $container->get('non_existing');
     }
 
@@ -1233,16 +1240,16 @@ public function testNewContainerDefinitionInDelegates(): void
 
         $config = ContainerConfig::create()
             ->withDefinitions([
-                ContainerInterface::class => new Container(ContainerConfig::create()),
+                ContainerInterface::class => new Container(),
             ])
             ->withDelegates([
                 function (ContainerInterface $container) use (&$firstContainer): ContainerInterface {
                     $firstContainer = $container;
-                    return new Container(ContainerConfig::create());
+                    return new Container();
                 },
                 function (ContainerInterface $container) use (&$secondContainer): ContainerInterface {
                     $secondContainer = $container;
-                    return new Container(ContainerConfig::create());
+                    return new Container();
                 },
             ]);
         $originalContainer = new Container($config);
@@ -1619,7 +1626,7 @@ public function testDifferentContainerWithProviders(): void
             public function getDefinitions(): array
             {
                 return [
-                    ContainerInterface::class => static fn (ContainerInterface $container) => new Container(ContainerConfig::create()),
+                    ContainerInterface::class => static fn (ContainerInterface $container) => new Container(),
                 ];
             }
 
diff --git a/tests/Unit/ServiceProviderTest.php b/tests/Unit/ServiceProviderTest.php
index 73007e5b..f9bb181c 100644
--- a/tests/Unit/ServiceProviderTest.php
+++ b/tests/Unit/ServiceProviderTest.php
@@ -66,7 +66,7 @@ private function ensureProviderRegisterExtensions($provider): void
 
     private function ensureProviderRegisterDefinitions($provider): void
     {
-        $container = new Container(ContainerConfig::create());
+        $container = new Container();
 
         $this->assertFalse(
             $container->has(Car::class),