diff --git a/src/targets/__tests__/registry.test.ts b/src/targets/__tests__/registry.test.ts
new file mode 100644
index 00000000..1ec3a3de
--- /dev/null
+++ b/src/targets/__tests__/registry.test.ts
@@ -0,0 +1,48 @@
+jest.mock('../../utils/githubApi.ts');
+import { getGitHubClient } from '../../utils/githubApi';
+import { RegistryConfig, RegistryTarget } from '../registry';
+import { NoneArtifactProvider } from '../../artifact_providers/none';
+import { RegistryPackageType } from '../../utils/registry';
+
+describe('getUpdatedManifest', () => {
+  let mockClient: jest.Mock;
+
+  beforeEach(() => {
+    jest.resetAllMocks();
+    mockClient = jest.fn();
+    (getGitHubClient as jest.MockedFunction<
+      typeof getGitHubClient
+      // @ts-ignore we only need to mock a subset
+    >).mockReturnValue({ graphql: mockClient });
+  });
+
+  const target = new RegistryTarget(
+    { name: 'pypi' },
+    new NoneArtifactProvider(),
+    { owner: 'testSourceOwner', repo: 'testSourceRepo' }
+  );
+
+  it('check if createdAt exists', async () => {
+    const registryConfig: RegistryConfig = {
+      type: RegistryPackageType.SDK,
+      canonicalName: 'example-package',
+    };
+    const packageManifest = {
+      canonical: 'example-package',
+    };
+    const canonical = 'example-package';
+    const version = '1.2.3';
+    const revision = 'abc123';
+
+    const updatedManifest = await target.getUpdatedManifest(
+      registryConfig,
+      packageManifest,
+      canonical,
+      version,
+      revision
+    );
+
+    // check if property createdAt exists
+    expect(updatedManifest).toHaveProperty('createdAt');
+  });
+});
diff --git a/src/targets/registry.ts b/src/targets/registry.ts
index df651845..f333b9dc 100644
--- a/src/targets/registry.ts
+++ b/src/targets/registry.ts
@@ -362,7 +362,15 @@ export class RegistryTarget extends BaseTarget {
       );
     }
     // Update the manifest
-    const updatedManifest = { ...packageManifest, version };
+    const updatedManifest: {
+      version: string;
+      createdAt: string;
+      [key: string]: any;
+    } = {
+      ...packageManifest,
+      version,
+      createdAt: new Date().toISOString(),
+    };
 
     // Add file links if it's a generic app (legacy)
     if (registryConfig.type === RegistryPackageType.APP) {