diff --git a/psalm.xml b/psalm.xml
index d4a2702..c695981 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -14,6 +14,12 @@
         </ignoreFiles>
     </projectFiles>
     <issueHandlers>
+        <DeprecatedInterface>
+            <errorLevel type="suppress">
+                <file name="src/Commands/InfoCommand.php"/>
+                <file name="src/DeclarationLocator.php"/>
+            </errorLevel>
+        </DeprecatedInterface>
         <PropertyNotSetInConstructor>
             <errorLevel type="suppress">
                 <file name="src/Commands/Scaffolder/ActivityCommand.php"/>
diff --git a/src/Bootloader/TemporalBridgeBootloader.php b/src/Bootloader/TemporalBridgeBootloader.php
index b346329..fc27bdf 100644
--- a/src/Bootloader/TemporalBridgeBootloader.php
+++ b/src/Bootloader/TemporalBridgeBootloader.php
@@ -18,6 +18,7 @@
 use Spiral\TemporalBridge\Config\TemporalConfig;
 use Spiral\TemporalBridge\DeclarationLocator;
 use Spiral\TemporalBridge\DeclarationLocatorInterface;
+use Spiral\TemporalBridge\DeclarationRegistryInterface;
 use Spiral\TemporalBridge\Dispatcher;
 use Spiral\TemporalBridge\WorkerFactory;
 use Spiral\TemporalBridge\WorkerFactoryInterface;
@@ -63,8 +64,9 @@ public function defineSingletons(): array
                 rpc: Goridge::create(),
             ),
             WorkerFactoryInterface::class => WorkerFactory::class,
+            DeclarationLocatorInterface::class => DeclarationRegistryInterface::class,
 
-            DeclarationLocatorInterface::class => static fn() => new DeclarationLocator(
+            DeclarationRegistryInterface::class => static fn() => new DeclarationLocator(
                 reader: new AttributeReader(),
             ),
 
diff --git a/src/Config/TemporalConfig.php b/src/Config/TemporalConfig.php
index 9853921..ff4c847 100644
--- a/src/Config/TemporalConfig.php
+++ b/src/Config/TemporalConfig.php
@@ -32,6 +32,7 @@
  */
 final class TemporalConfig extends InjectableConfig
 {
+    /** @var non-empty-string */
     public const CONFIG = 'temporal';
 
     protected array $config = [
diff --git a/src/DeclarationLocator.php b/src/DeclarationLocator.php
index 4f44444..bd94549 100644
--- a/src/DeclarationLocator.php
+++ b/src/DeclarationLocator.php
@@ -14,7 +14,7 @@
 #[Singleton]
 #[TargetAttribute(WorkflowInterface::class)]
 #[TargetAttribute(ActivityInterface::class)]
-final class DeclarationLocator implements DeclarationLocatorInterface, TokenizationListenerInterface
+final class DeclarationLocator implements DeclarationRegistryInterface, TokenizationListenerInterface
 {
     private array $declarations = [];
 
@@ -23,6 +23,11 @@ public function __construct(
     ) {
     }
 
+    public function addDeclaration(\ReflectionClass|string $class): void
+    {
+        $this->listen($class instanceof \ReflectionClass ? $class : new \ReflectionClass($class));
+    }
+
     public function getDeclarations(): iterable
     {
         foreach ($this->declarations as $type => $classes) {
diff --git a/src/DeclarationLocatorInterface.php b/src/DeclarationLocatorInterface.php
index 22f0e2a..ff0c393 100644
--- a/src/DeclarationLocatorInterface.php
+++ b/src/DeclarationLocatorInterface.php
@@ -7,6 +7,9 @@
 use Temporal\Activity\ActivityInterface;
 use Temporal\Workflow\WorkflowInterface;
 
+/**
+ * @deprecated Use {@see DeclarationRegistryInterface} instead.
+ */
 interface DeclarationLocatorInterface
 {
     /**
diff --git a/src/DeclarationRegistryInterface.php b/src/DeclarationRegistryInterface.php
new file mode 100644
index 0000000..0091a1d
--- /dev/null
+++ b/src/DeclarationRegistryInterface.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Spiral\TemporalBridge;
+
+interface DeclarationRegistryInterface extends DeclarationLocatorInterface
+{
+    /**
+     * Add a new declaration to the registry.
+     *
+     * @param \ReflectionClass|class-string $class Workflow or activity class name or reflection.
+     */
+    public function addDeclaration(\ReflectionClass|string $class): void;
+}
diff --git a/src/Dispatcher.php b/src/Dispatcher.php
index bc643b4..0a750ad 100644
--- a/src/Dispatcher.php
+++ b/src/Dispatcher.php
@@ -32,7 +32,7 @@ public function serve(): void
         /**
          * @var array<class-string<WorkflowInterface>|class-string<ActivityInterface>, ReflectionClass> $declarations
          */
-        $declarations = $this->container->get(DeclarationLocatorInterface::class)->getDeclarations();
+        $declarations = $this->container->get(DeclarationRegistryInterface::class)->getDeclarations();
 
         // factory initiates and runs task queue specific activity and workflow workers
         /** @var WorkerFactoryInterface $factory */
diff --git a/src/Scaffolder/Declaration/ActivityDeclaration.php b/src/Scaffolder/Declaration/ActivityDeclaration.php
index 8dd65bc..182059b 100644
--- a/src/Scaffolder/Declaration/ActivityDeclaration.php
+++ b/src/Scaffolder/Declaration/ActivityDeclaration.php
@@ -13,6 +13,7 @@
 
 final class ActivityDeclaration extends AbstractDeclaration
 {
+    /** @var non-empty-string */
     public const TYPE = 'activity';
 
     public function __construct(
@@ -20,7 +21,7 @@ public function __construct(
         string $name,
         ?string $comment = null,
         ?string $namespace = null,
-        private ?string $activityName = null,
+        private readonly ?string $activityName = null,
     ) {
         parent::__construct($config, $name, $comment, $namespace);
     }
diff --git a/src/Scaffolder/Declaration/WorkflowDeclaration.php b/src/Scaffolder/Declaration/WorkflowDeclaration.php
index f572aa9..df670f5 100644
--- a/src/Scaffolder/Declaration/WorkflowDeclaration.php
+++ b/src/Scaffolder/Declaration/WorkflowDeclaration.php
@@ -14,6 +14,7 @@
 
 final class WorkflowDeclaration extends AbstractDeclaration
 {
+    /** @var non-empty-string */
     public const TYPE = 'workflow';
 
     public function __construct(
diff --git a/tests/src/DeclarationLocatorTest.php b/tests/src/DeclarationLocatorTest.php
index e22d860..9f98ab6 100644
--- a/tests/src/DeclarationLocatorTest.php
+++ b/tests/src/DeclarationLocatorTest.php
@@ -4,17 +4,14 @@
 
 namespace Spiral\TemporalBridge\Tests;
 
-use Mockery as m;
 use Spiral\Attributes\AttributeReader;
 use Spiral\TemporalBridge\DeclarationLocator;
-use Spiral\Tokenizer\ClassesInterface;
 use Temporal\Activity\ActivityInterface;
 use Temporal\Workflow\WorkflowInterface;
 
 final class DeclarationLocatorTest extends TestCase
 {
     private DeclarationLocator $locator;
-    private m\LegacyMockInterface|m\MockInterface $classes;
 
     protected function setUp(): void
     {
@@ -68,6 +65,80 @@ public function testWorkflowsShouldBeRegistered(): void
         $this->assertSame(ActivityInterface::class, $result[3][0]);
         $this->assertSame($activity2, $result[3][1]);
     }
+
+    public function testAddDeclarationSkipsNonClasses(): void
+    {
+        $this->locator->addDeclaration(TestEnum::class);
+        $this->locator->addDeclaration(TestAbstractClass::class);
+        $this->locator->addDeclaration(TestInterface::class);
+        $this->locator->addDeclaration(new \ReflectionClass(TestEnum::class));
+        $this->locator->addDeclaration(new \ReflectionClass(TestAbstractClass::class));
+        $this->locator->addDeclaration(new \ReflectionClass(TestInterface::class));
+
+        $result = [];
+
+        foreach ($this->locator->getDeclarations() as $type => $class) {
+            $result[] = [$type, $class];
+        }
+
+        $this->assertCount(0, $result);
+    }
+
+    public function testAddDeclarationReflections(): void
+    {
+        $this->locator->addDeclaration($workflow1 = new \ReflectionClass(TestWorkflowClass::class));
+        $this->locator->addDeclaration($workflow2 = new \ReflectionClass(TestWorkflowClassWithInterface::class));
+        $this->locator->addDeclaration($activity1 = new \ReflectionClass(TestActivityClass::class));
+        $this->locator->addDeclaration($activity2 = new \ReflectionClass(TestActivityClassWithInterface::class));
+
+        $result = [];
+
+        foreach ($this->locator->getDeclarations() as $type => $class) {
+            $result[] = [$type, $class];
+        }
+
+        $this->assertCount(4, $result);
+
+        $this->assertSame(WorkflowInterface::class, $result[0][0]);
+        $this->assertSame($workflow1, $result[0][1]);
+
+        $this->assertSame(WorkflowInterface::class, $result[1][0]);
+        $this->assertSame($workflow2, $result[1][1]);
+
+        $this->assertSame(ActivityInterface::class, $result[2][0]);
+        $this->assertSame($activity1, $result[2][1]);
+
+        $this->assertSame(ActivityInterface::class, $result[3][0]);
+        $this->assertSame($activity2, $result[3][1]);
+    }
+
+    public function testAddDeclarationClassNames(): void
+    {
+        $this->locator->addDeclaration(TestWorkflowClass::class);
+        $this->locator->addDeclaration(TestWorkflowClassWithInterface::class);
+        $this->locator->addDeclaration(TestActivityClass::class);
+        $this->locator->addDeclaration(TestActivityClassWithInterface::class);
+
+        $result = [];
+
+        foreach ($this->locator->getDeclarations() as $type => $class) {
+            $result[] = [$type, $class];
+        }
+
+        $this->assertCount(4, $result);
+
+        $this->assertSame(WorkflowInterface::class, $result[0][0]);
+        $this->assertSame(TestWorkflowClass::class, $result[0][1]->getName());
+
+        $this->assertSame(WorkflowInterface::class, $result[1][0]);
+        $this->assertSame(TestWorkflowClassWithInterface::class, $result[1][1]->getName());
+
+        $this->assertSame(ActivityInterface::class, $result[2][0]);
+        $this->assertSame(TestActivityClass::class, $result[2][1]->getName());
+
+        $this->assertSame(ActivityInterface::class, $result[3][0]);
+        $this->assertSame(TestActivityClassWithInterface::class, $result[3][1]->getName());
+    }
 }
 
 enum TestEnum
diff --git a/tests/src/DispatcherTest.php b/tests/src/DispatcherTest.php
index 1addc89..b0f5f0c 100644
--- a/tests/src/DispatcherTest.php
+++ b/tests/src/DispatcherTest.php
@@ -8,7 +8,7 @@
 use Spiral\Attributes\AttributeReader;
 use Spiral\RoadRunnerBridge\RoadRunnerMode;
 use Spiral\TemporalBridge\Config\TemporalConfig;
-use Spiral\TemporalBridge\DeclarationLocatorInterface;
+use Spiral\TemporalBridge\DeclarationRegistryInterface;
 use Spiral\TemporalBridge\DeclarationWorkerResolver;
 use Spiral\TemporalBridge\Dispatcher;
 use Spiral\TemporalBridge\Tests\App\SomeActivity;
@@ -41,7 +41,7 @@ protected function setUp(): void
 
     public function testServeWithoutDeclarations(): void
     {
-        $locator = $this->mockContainer(DeclarationLocatorInterface::class);
+        $locator = $this->mockContainer(DeclarationRegistryInterface::class);
         $locator->shouldReceive('getDeclarations')->once()->andReturn([]);
 
         $registry = $this->mockContainer(WorkersRegistryInterface::class);
@@ -59,7 +59,7 @@ public function testServeWithoutDeclarations(): void
 
     public function testServeWithDeclarations(): void
     {
-        $locator = $this->mockContainer(DeclarationLocatorInterface::class);
+        $locator = $this->mockContainer(DeclarationRegistryInterface::class);
         $locator->shouldReceive('getDeclarations')->once()->andReturnUsing(function () {
             yield WorkflowInterface::class => new \ReflectionClass(SomeWorkflow::class);
             yield WorkflowInterface::class => new \ReflectionClass(SomeWorkflowWithMultipleWorkers::class);