diff --git a/src/utils/editor.test.jsx b/src/utils/editor.test.jsx
index b15757d3..6c7b52cb 100644
--- a/src/utils/editor.test.jsx
+++ b/src/utils/editor.test.jsx
@@ -13,12 +13,15 @@ import { getGBKit, getPost } from './bridge';
 import { getDefaultEditorSettings } from './editor-settings';
 import { unregisterDisallowedBlocks } from './blocks';
 
+vi.mock( '@wordpress/blocks', () => ( {} ) );
 vi.mock( '@wordpress/editor', () => ( {
 	store: { name: 'core/editor' },
 } ) );
 vi.mock( import( '@wordpress/data' ), { spy: true } );
 vi.mock( '@wordpress/preferences' );
-vi.mock( '@wordpress/block-library' );
+vi.mock( '@wordpress/block-library', () => ( {
+	registerCoreBlocks: vi.fn(),
+} ) );
 vi.mock( './blocks' );
 vi.mock( './bridge' );
 vi.mock( './editor-settings' );