diff --git a/UPGRADE-6.3.md b/UPGRADE-6.3.md
index e1655bfa81b62..17e9002f0882e 100644
--- a/UPGRADE-6.3.md
+++ b/UPGRADE-6.3.md
@@ -1,6 +1,16 @@
 UPGRADE FROM 6.2 to 6.3
 =======================
 
+DependencyInjection
+-------------------
+
+ * Deprecate `PhpDumper` options `inline_factories_parameter` and `inline_class_loader_parameter`, use `inline_factories` and `inline_class_loader` instead
+
+HttpKernel
+----------
+
+ * Deprecate parameters `container.dumper.inline_factories` and `container.dumper.inline_class_loader`, use `.container.dumper.inline_factories` and `.container.dumper.inline_class_loader` instead
+
 SecurityBundle
 --------------
 
diff --git a/src/Symfony/Component/DependencyInjection/CHANGELOG.md b/src/Symfony/Component/DependencyInjection/CHANGELOG.md
index b3626d02cc107..0282cd57f2823 100644
--- a/src/Symfony/Component/DependencyInjection/CHANGELOG.md
+++ b/src/Symfony/Component/DependencyInjection/CHANGELOG.md
@@ -1,6 +1,13 @@
 CHANGELOG
 =========
 
+6.3
+---
+
+ * Add options `inline_factories` and `inline_class_loader` to `PhpDumper::dump()`
+ * Deprecate `PhpDumper` options `inline_factories_parameter` and `inline_class_loader_parameter`
+ * Add `RemoveBuildParametersPass`, which removes parameters starting with a dot during compilation
+
 6.2
 ---
 
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php b/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php
index 3acbe26de0d3c..624a97db8ae0a 100644
--- a/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php
+++ b/src/Symfony/Component/DependencyInjection/Compiler/PassConfig.php
@@ -90,11 +90,15 @@ public function __construct()
             new DefinitionErrorExceptionPass(),
         ]];
 
-        $this->afterRemovingPasses = [[
-            new ResolveHotPathPass(),
-            new ResolveNoPreloadPass(),
-            new AliasDeprecatedPublicServicesPass(),
-        ]];
+        $this->afterRemovingPasses = [
+            0 => [
+                new ResolveHotPathPass(),
+                new ResolveNoPreloadPass(),
+                new AliasDeprecatedPublicServicesPass(),
+            ],
+            // Let build parameters be available as late as possible
+            -2048 => [new RemoveBuildParametersPass()],
+        ];
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Compiler/RemoveBuildParametersPass.php b/src/Symfony/Component/DependencyInjection/Compiler/RemoveBuildParametersPass.php
new file mode 100644
index 0000000000000..44d9fa8c64225
--- /dev/null
+++ b/src/Symfony/Component/DependencyInjection/Compiler/RemoveBuildParametersPass.php
@@ -0,0 +1,45 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\DependencyInjection\Compiler;
+
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+class RemoveBuildParametersPass implements CompilerPassInterface
+{
+    /**
+     * @var array<string, mixed>
+     */
+    private array $removedParameters = [];
+
+    public function process(ContainerBuilder $container)
+    {
+        $parameterBag = $container->getParameterBag();
+        $this->removedParameters = [];
+
+        foreach ($parameterBag->all() as $name => $value) {
+            if ('.' === ($name[0] ?? '')) {
+                $this->removedParameters[$name] = $value;
+
+                $parameterBag->remove($name);
+                $container->log($this, sprintf('Removing build parameter "%s".', $name));
+            }
+        }
+    }
+
+    /**
+     * @return array<string, mixed>
+     */
+    public function getRemovedParameters(): array
+    {
+        return $this->removedParameters;
+    }
+}
diff --git a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
index 4d827d53e28b7..0132446bda957 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
@@ -137,8 +137,10 @@ public function dump(array $options = []): string|array
             'debug' => true,
             'hot_path_tag' => 'container.hot_path',
             'preload_tags' => ['container.preload', 'container.no_preload'],
-            'inline_factories_parameter' => 'container.dumper.inline_factories',
-            'inline_class_loader_parameter' => 'container.dumper.inline_class_loader',
+            'inline_factories_parameter' => 'container.dumper.inline_factories', // @deprecated since Symfony 6.3
+            'inline_class_loader_parameter' => 'container.dumper.inline_class_loader', // @deprecated since Symfony 6.3
+            'inline_factories' => null,
+            'inline_class_loader' => null,
             'preload_classes' => [],
             'service_locator_tag' => 'container.service_locator',
             'build_time' => time(),
@@ -149,8 +151,28 @@ public function dump(array $options = []): string|array
         $this->asFiles = $options['as_files'];
         $this->hotPathTag = $options['hot_path_tag'];
         $this->preloadTags = $options['preload_tags'];
-        $this->inlineFactories = $this->asFiles && $options['inline_factories_parameter'] && $this->container->hasParameter($options['inline_factories_parameter']) && $this->container->getParameter($options['inline_factories_parameter']);
-        $this->inlineRequires = $options['inline_class_loader_parameter'] && ($this->container->hasParameter($options['inline_class_loader_parameter']) ? $this->container->getParameter($options['inline_class_loader_parameter']) : $options['debug']);
+
+        $this->inlineFactories = false;
+        if (isset($options['inline_factories'])) {
+            $this->inlineFactories = $this->asFiles && $options['inline_factories'];
+        } elseif (!$options['inline_factories_parameter']) {
+            trigger_deprecation('symfony/dependency-injection', '6.3', 'Option "inline_factories_parameter" passed to "%s()" is deprecated, use option "inline_factories" instead.', __METHOD__);
+        } elseif ($this->container->hasParameter($options['inline_factories_parameter'])) {
+            trigger_deprecation('symfony/dependency-injection', '6.3', 'Option "inline_factories_parameter" passed to "%s()" is deprecated, use option "inline_factories" instead.', __METHOD__);
+            $this->inlineFactories = $this->asFiles && $this->container->getParameter($options['inline_factories_parameter']);
+        }
+
+        $this->inlineRequires = $options['debug'];
+        if (isset($options['inline_class_loader'])) {
+            $this->inlineRequires = $options['inline_class_loader'];
+        } elseif (!$options['inline_class_loader_parameter']) {
+            trigger_deprecation('symfony/dependency-injection', '6.3', 'Option "inline_class_loader_parameter" passed to "%s()" is deprecated, use option "inline_class_loader" instead.', __METHOD__);
+            $this->inlineRequires = false;
+        } elseif ($this->container->hasParameter($options['inline_class_loader_parameter'])) {
+            trigger_deprecation('symfony/dependency-injection', '6.3', 'Option "inline_class_loader_parameter" passed to "%s()" is deprecated, use option "inline_class_loader" instead.', __METHOD__);
+            $this->inlineRequires = $this->container->getParameter($options['inline_class_loader_parameter']);
+        }
+
         $this->serviceLocatorTag = $options['service_locator_tag'];
         $this->class = $options['class'];
 
diff --git a/src/Symfony/Component/DependencyInjection/Exception/ParameterNotFoundException.php b/src/Symfony/Component/DependencyInjection/Exception/ParameterNotFoundException.php
index 71c36f6866411..e8f593187e9a7 100644
--- a/src/Symfony/Component/DependencyInjection/Exception/ParameterNotFoundException.php
+++ b/src/Symfony/Component/DependencyInjection/Exception/ParameterNotFoundException.php
@@ -53,6 +53,8 @@ public function updateRepr()
             $this->message = sprintf('The service "%s" has a dependency on a non-existent parameter "%s".', $this->sourceId, $this->key);
         } elseif (null !== $this->sourceKey) {
             $this->message = sprintf('The parameter "%s" has a dependency on a non-existent parameter "%s".', $this->sourceKey, $this->key);
+        } elseif ('.' === ($this->key[0] ?? '')) {
+            $this->message = sprintf('Parameter "%s" not found. It was probably deleted during the compilation of the container.', $this->key);
         } else {
             $this->message = sprintf('You have requested a non-existent parameter "%s".', $this->key);
         }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Compiler/RemoveBuildParametersPassTest.php b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RemoveBuildParametersPassTest.php
new file mode 100644
index 0000000000000..4bc3b78ec0b1f
--- /dev/null
+++ b/src/Symfony/Component/DependencyInjection/Tests/Compiler/RemoveBuildParametersPassTest.php
@@ -0,0 +1,33 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\DependencyInjection\Tests\Compiler;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\DependencyInjection\Compiler\RemoveBuildParametersPass;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+class RemoveBuildParametersPassTest extends TestCase
+{
+    public function testBuildParametersShouldBeRemoved()
+    {
+        $builder = new ContainerBuilder();
+        $builder->setParameter('foo', 'Foo');
+        $builder->setParameter('.bar', 'Bar');
+
+        $pass = new RemoveBuildParametersPass();
+        $pass->process($builder);
+
+        $this->assertSame('Foo', $builder->getParameter('foo'), '"foo" parameter must be defined.');
+        $this->assertFalse($builder->hasParameter('.bar'), '".bar" parameter must be removed.');
+        $this->assertSame(['.bar' => 'Bar'], $pass->getRemovedParameters(), '".baz" parameter must be returned with its value.');
+    }
+}
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php b/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
index 12d5b80f8baf3..816787154a364 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
@@ -222,7 +222,7 @@ public function testDumpAsFiles()
             ->addError('No-no-no-no');
         $container->compile();
         $dumper = new PhpDumper($container);
-        $dump = print_r($dumper->dump(['as_files' => true, 'file' => __DIR__, 'hot_path_tag' => 'hot', 'inline_factories_parameter' => false, 'inline_class_loader_parameter' => false]), true);
+        $dump = print_r($dumper->dump(['as_files' => true, 'file' => __DIR__, 'hot_path_tag' => 'hot', 'inline_factories' => false, 'inline_class_loader' => false]), true);
         if ('\\' === \DIRECTORY_SEPARATOR) {
             $dump = str_replace("'.\\DIRECTORY_SEPARATOR.'", '/', $dump);
         }
@@ -241,7 +241,7 @@ public function testDumpAsFilesWithTypedReference()
             ->setPublic(true);
         $container->compile();
         $dumper = new PhpDumper($container);
-        $dump = print_r($dumper->dump(['as_files' => true, 'file' => __DIR__, 'hot_path_tag' => 'hot', 'inline_factories_parameter' => false, 'inline_class_loader_parameter' => false]), true);
+        $dump = print_r($dumper->dump(['as_files' => true, 'file' => __DIR__, 'hot_path_tag' => 'hot', 'inline_factories' => false, 'inline_class_loader' => false]), true);
         if ('\\' === \DIRECTORY_SEPARATOR) {
             $dump = str_replace("'.\\DIRECTORY_SEPARATOR.'", '/', $dump);
         }
@@ -252,8 +252,6 @@ public function testDumpAsFilesWithTypedReference()
     public function testDumpAsFilesWithFactoriesInlined()
     {
         $container = include self::$fixturesPath.'/containers/container9.php';
-        $container->setParameter('container.dumper.inline_factories', true);
-        $container->setParameter('container.dumper.inline_class_loader', true);
 
         $container->getDefinition('bar')->addTag('hot');
         $container->register('non_shared_foo', \Bar\FooClass::class)
@@ -268,7 +266,7 @@ public function testDumpAsFilesWithFactoriesInlined()
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        $dump = print_r($dumper->dump(['as_files' => true, 'file' => __DIR__, 'hot_path_tag' => 'hot', 'build_time' => 1563381341]), true);
+        $dump = print_r($dumper->dump(['as_files' => true, 'file' => __DIR__, 'hot_path_tag' => 'hot', 'build_time' => 1563381341, 'inline_factories' => true, 'inline_class_loader' => true]), true);
 
         if ('\\' === \DIRECTORY_SEPARATOR) {
             $dump = str_replace("'.\\DIRECTORY_SEPARATOR.'", '/', $dump);
@@ -279,8 +277,6 @@ public function testDumpAsFilesWithFactoriesInlined()
     public function testDumpAsFilesWithLazyFactoriesInlined()
     {
         $container = new ContainerBuilder();
-        $container->setParameter('container.dumper.inline_factories', true);
-        $container->setParameter('container.dumper.inline_class_loader', true);
         $container->setParameter('lazy_foo_class', \Bar\FooClass::class);
 
         $container->register('lazy_foo', '%lazy_foo_class%')
@@ -292,7 +288,7 @@ public function testDumpAsFilesWithLazyFactoriesInlined()
         $container->compile();
 
         $dumper = new PhpDumper($container);
-        $dump = print_r($dumper->dump(['as_files' => true, 'file' => __DIR__, 'hot_path_tag' => 'hot', 'build_time' => 1563381341]), true);
+        $dump = print_r($dumper->dump(['as_files' => true, 'file' => __DIR__, 'hot_path_tag' => 'hot', 'build_time' => 1563381341, 'inline_factories' => true, 'inline_class_loader' => true]), true);
 
         if ('\\' === \DIRECTORY_SEPARATOR) {
             $dump = str_replace("'.\\DIRECTORY_SEPARATOR.'", '/', $dump);
@@ -310,7 +306,7 @@ public function testNonSharedLazyDumpAsFiles()
             ->setLazy(true);
         $container->compile();
         $dumper = new PhpDumper($container);
-        $dump = print_r($dumper->dump(['as_files' => true, 'file' => __DIR__, 'inline_factories_parameter' => false, 'inline_class_loader_parameter' => false]), true);
+        $dump = print_r($dumper->dump(['as_files' => true, 'file' => __DIR__, 'inline_factories' => false, 'inline_class_loader' => false]), true);
 
         if ('\\' === \DIRECTORY_SEPARATOR) {
             $dump = str_replace("'.\\DIRECTORY_SEPARATOR.'", '/', $dump);
@@ -473,7 +469,7 @@ public function testEnvParameter()
         $container->compile();
         $dumper = new PhpDumper($container);
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services26.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_EnvParameters', 'file' => self::$fixturesPath.'/php/services26.php', 'inline_factories_parameter' => false, 'inline_class_loader_parameter' => false]));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services26.php', $dumper->dump(['class' => 'Symfony_DI_PhpDumper_Test_EnvParameters', 'file' => self::$fixturesPath.'/php/services26.php', 'inline_factories' => false, 'inline_class_loader' => false]));
 
         require self::$fixturesPath.'/php/services26.php';
         $container = new \Symfony_DI_PhpDumper_Test_EnvParameters();
@@ -994,7 +990,7 @@ public function testArrayParameters()
 
         $dumper = new PhpDumper($container);
 
-        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_array_params.php', str_replace("'.\\DIRECTORY_SEPARATOR.'", '/', $dumper->dump(['file' => self::$fixturesPath.'/php/services_array_params.php', 'inline_factories_parameter' => false, 'inline_class_loader_parameter' => false])));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_array_params.php', str_replace("'.\\DIRECTORY_SEPARATOR.'", '/', $dumper->dump(['file' => self::$fixturesPath.'/php/services_array_params.php', 'inline_factories' => false, 'inline_class_loader' => false])));
     }
 
     public function testExpressionReferencingPrivateService()
@@ -1162,11 +1158,10 @@ public function testInlineSelfRef()
     public function testHotPathOptimizations()
     {
         $container = include self::$fixturesPath.'/containers/container_inline_requires.php';
-        $container->setParameter('inline_requires', true);
         $container->compile();
         $dumper = new PhpDumper($container);
 
-        $dump = $dumper->dump(['hot_path_tag' => 'container.hot_path', 'inline_class_loader_parameter' => 'inline_requires', 'file' => self::$fixturesPath.'/php/services_inline_requires.php']);
+        $dump = $dumper->dump(['hot_path_tag' => 'container.hot_path', 'inline_class_loader' => true, 'file' => self::$fixturesPath.'/php/services_inline_requires.php']);
         if ('\\' === \DIRECTORY_SEPARATOR) {
             $dump = str_replace("'.\\DIRECTORY_SEPARATOR.'", '/', $dump);
         }
@@ -1199,13 +1194,12 @@ public function testDumpHandlesObjectClassNames()
             new Reference('foo'),
         ]))->setPublic(true);
 
-        $container->setParameter('inline_requires', true);
         $container->compile();
 
         $dumper = new PhpDumper($container);
         eval('?>'.$dumper->dump([
             'class' => 'Symfony_DI_PhpDumper_Test_Object_Class_Name',
-            'inline_class_loader_parameter' => 'inline_requires',
+            'inline_class_loader' => true,
         ]));
 
         $container = new \Symfony_DI_PhpDumper_Test_Object_Class_Name();
@@ -1281,7 +1275,6 @@ public function testUninitializedSyntheticReference()
         $dumper = new PhpDumper($container);
         eval('?>'.$dumper->dump([
             'class' => 'Symfony_DI_PhpDumper_Test_UninitializedSyntheticReference',
-            'inline_class_loader_parameter' => 'inline_requires',
         ]));
 
         $container = new \Symfony_DI_PhpDumper_Test_UninitializedSyntheticReference();
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_inlined_factories.txt b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_inlined_factories.txt
index 230bb357db000..137506abdf4b0 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_inlined_factories.txt
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_inlined_factories.txt
@@ -557,8 +557,6 @@ class ProjectServiceContainer extends Container
             'baz_class' => 'BazClass',
             'foo_class' => 'Bar\\FooClass',
             'foo' => 'bar',
-            'container.dumper.inline_factories' => true,
-            'container.dumper.inline_class_loader' => true,
         ];
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_lazy_inlined_factories.txt b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_lazy_inlined_factories.txt
index 7af59984549ae..aa8c5da006f30 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_lazy_inlined_factories.txt
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_lazy_inlined_factories.txt
@@ -143,8 +143,6 @@ class ProjectServiceContainer extends Container
     protected function getDefaultParameters(): array
     {
         return [
-            'container.dumper.inline_factories' => true,
-            'container.dumper.inline_class_loader' => true,
             'lazy_foo_class' => 'Bar\\FooClass',
         ];
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php
index 386e5a5d0d739..d0509ad594369 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php
@@ -18,8 +18,6 @@ class ProjectServiceContainer extends Container
 
     public function __construct()
     {
-        $this->parameters = $this->getDefaultParameters();
-
         $this->services = $this->privates = [];
         $this->methodMap = [
             'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\ParentNotExists' => 'getParentNotExistsService',
@@ -86,54 +84,4 @@ protected function getC2Service()
 
         return $this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C2'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\includes\HotPath\C2(new \Symfony\Component\DependencyInjection\Tests\Fixtures\includes\HotPath\C3());
     }
-
-    public function getParameter(string $name): array|bool|string|int|float|\UnitEnum|null
-    {
-        if (!(isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || \array_key_exists($name, $this->parameters))) {
-            throw new ParameterNotFoundException($name);
-        }
-        if (isset($this->loadedDynamicParameters[$name])) {
-            return $this->loadedDynamicParameters[$name] ? $this->dynamicParameters[$name] : $this->getDynamicParameter($name);
-        }
-
-        return $this->parameters[$name];
-    }
-
-    public function hasParameter(string $name): bool
-    {
-        return isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || \array_key_exists($name, $this->parameters);
-    }
-
-    public function setParameter(string $name, $value): void
-    {
-        throw new LogicException('Impossible to call set() on a frozen ParameterBag.');
-    }
-
-    public function getParameterBag(): ParameterBagInterface
-    {
-        if (null === $this->parameterBag) {
-            $parameters = $this->parameters;
-            foreach ($this->loadedDynamicParameters as $name => $loaded) {
-                $parameters[$name] = $loaded ? $this->dynamicParameters[$name] : $this->getDynamicParameter($name);
-            }
-            $this->parameterBag = new FrozenParameterBag($parameters);
-        }
-
-        return $this->parameterBag;
-    }
-
-    private $loadedDynamicParameters = [];
-    private $dynamicParameters = [];
-
-    private function getDynamicParameter(string $name)
-    {
-        throw new ParameterNotFoundException($name);
-    }
-
-    protected function getDefaultParameters(): array
-    {
-        return [
-            'inline_requires' => true,
-        ];
-    }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ParameterBagTest.php b/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ParameterBagTest.php
index 7539da5d2ae6b..e97ec063e52a8 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ParameterBagTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ParameterBag/ParameterBagTest.php
@@ -121,6 +121,7 @@ public function provideGetThrowParameterNotFoundExceptionData()
             ['', 'You have requested a non-existent parameter "".'],
 
             ['fiz.bar.boo', 'You have requested a non-existent parameter "fiz.bar.boo". You cannot access nested array items, do you want to inject "fiz" instead?'],
+            ['.foo', 'Parameter ".foo" not found. It was probably deleted during the compilation of the container. Did you mean this: "foo"?'],
         ];
     }
 
diff --git a/src/Symfony/Component/HttpKernel/CHANGELOG.md b/src/Symfony/Component/HttpKernel/CHANGELOG.md
index 2a5aad623bfeb..3122668e697cb 100644
--- a/src/Symfony/Component/HttpKernel/CHANGELOG.md
+++ b/src/Symfony/Component/HttpKernel/CHANGELOG.md
@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+6.3
+---
+
+ * Deprecate parameters `container.dumper.inline_factories` and `container.dumper.inline_class_loader`, use `.container.dumper.inline_factories` and `.container.dumper.inline_class_loader` instead
+
 6.2
 ---
 
diff --git a/src/Symfony/Component/HttpKernel/Kernel.php b/src/Symfony/Component/HttpKernel/Kernel.php
index 20a47dce86719..96bb3d6a9627c 100644
--- a/src/Symfony/Component/HttpKernel/Kernel.php
+++ b/src/Symfony/Component/HttpKernel/Kernel.php
@@ -17,6 +17,7 @@
 use Symfony\Component\Config\Loader\LoaderResolver;
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
 use Symfony\Component\DependencyInjection\Compiler\PassConfig;
+use Symfony\Component\DependencyInjection\Compiler\RemoveBuildParametersPass;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\DependencyInjection\Dumper\PhpDumper;
@@ -648,12 +649,37 @@ protected function dumpContainer(ConfigCache $cache, ContainerBuilder $container
         // cache the container
         $dumper = new PhpDumper($container);
 
+        $buildParameters = [];
+        foreach ($container->getCompilerPassConfig()->getPasses() as $pass) {
+            if ($pass instanceof RemoveBuildParametersPass) {
+                $buildParameters = array_merge($buildParameters, $pass->getRemovedParameters());
+            }
+        }
+
+        $inlineFactories = false;
+        if (isset($buildParameters['.container.dumper.inline_factories'])) {
+            $inlineFactories = $buildParameters['.container.dumper.inline_factories'];
+        } elseif ($container->hasParameter('container.dumper.inline_factories')) {
+            trigger_deprecation('symfony/http-kernel', '6.3', 'Parameter "%s" is deprecated, use ".%$1s" instead.', 'container.dumper.inline_factories');
+            $inlineFactories = $container->getParameter('container.dumper.inline_factories');
+        }
+
+        $inlineClassLoader = $this->debug;
+        if (isset($buildParameters['.container.dumper.inline_class_loader'])) {
+            $inlineClassLoader = $buildParameters['.container.dumper.inline_class_loader'];
+        } elseif ($container->hasParameter('container.dumper.inline_class_loader')) {
+            trigger_deprecation('symfony/http-kernel', '6.3', 'Parameter "%s" is deprecated, use ".%$1s" instead.', 'container.dumper.inline_class_loader');
+            $inlineClassLoader = $container->getParameter('container.dumper.inline_class_loader');
+        }
+
         $content = $dumper->dump([
             'class' => $class,
             'base_class' => $baseClass,
             'file' => $cache->getPath(),
             'as_files' => true,
             'debug' => $this->debug,
+            'inline_factories' => $inlineFactories,
+            'inline_class_loader' => $inlineClassLoader,
             'build_time' => $container->hasParameter('kernel.container_build_time') ? $container->getParameter('kernel.container_build_time') : time(),
             'preload_classes' => array_map('get_class', $this->bundles),
         ]);