diff --git a/packages/e2e-tests/plugins/interactive-blocks/deferred-store/view.js b/packages/e2e-tests/plugins/interactive-blocks/deferred-store/view.js
index 121727dcc467c..d3803788c0d1b 100644
--- a/packages/e2e-tests/plugins/interactive-blocks/deferred-store/view.js
+++ b/packages/e2e-tests/plugins/interactive-blocks/deferred-store/view.js
@@ -3,8 +3,9 @@
  */
 import { store, getContext } from '@wordpress/interactivity';
 
-document.addEventListener( 'DOMContentLoaded', () => {
-	setTimeout( () => {
+window.addEventListener(
+	'_test_proceed_',
+	() => {
 		store( 'test/deferred-store', {
 			state: {
 				reversedText() {
@@ -16,5 +17,6 @@ document.addEventListener( 'DOMContentLoaded', () => {
 				},
 			},
 		} );
-	}, 100 );
-} );
+	},
+	{ once: true }
+);
diff --git a/test/e2e/specs/interactivity/deferred-store.spec.ts b/test/e2e/specs/interactivity/deferred-store.spec.ts
index 4521322e61dfc..b6a7853c40dcd 100644
--- a/test/e2e/specs/interactivity/deferred-store.spec.ts
+++ b/test/e2e/specs/interactivity/deferred-store.spec.ts
@@ -21,6 +21,9 @@ test.describe( 'deferred store', () => {
 	} ) => {
 		const resultInput = page.getByTestId( 'result' );
 		await expect( resultInput ).toHaveText( '' );
+		await page.evaluate( () => {
+			window.dispatchEvent( new Event( '_test_proceed_' ) );
+		} );
 		await expect( resultInput ).toHaveText( 'Hello, world!' );
 	} );
 
@@ -31,6 +34,9 @@ test.describe( 'deferred store', () => {
 	} ) => {
 		const resultInput = page.getByTestId( 'result-getter' );
 		await expect( resultInput ).toHaveText( '' );
+		await page.evaluate( () => {
+			window.dispatchEvent( new Event( '_test_proceed_' ) );
+		} );
 		await expect( resultInput ).toHaveText( 'Hello, world!' );
 	} );
 } );