diff --git a/packages/now-next/test/fixtures/00-i18n-support-no-shared-lambdas/pages/not-found/fallback/[slug].js b/packages/now-next/test/fixtures/00-i18n-support-no-shared-lambdas/pages/not-found/fallback/[slug].js
index 992fec8c387..34805f6d3f3 100644
--- a/packages/now-next/test/fixtures/00-i18n-support-no-shared-lambdas/pages/not-found/fallback/[slug].js
+++ b/packages/now-next/test/fixtures/00-i18n-support-no-shared-lambdas/pages/not-found/fallback/[slug].js
@@ -26,7 +26,7 @@ export default function Page(props) {
 export const getStaticProps = ({ params, locale, locales }) => {
   if (locale === 'en' || locale === 'nl') {
     return {
-      unstable_notFound: true,
+      notFound: true,
     };
   }
 
diff --git a/packages/now-next/test/fixtures/00-i18n-support-no-shared-lambdas/pages/not-found/index.js b/packages/now-next/test/fixtures/00-i18n-support-no-shared-lambdas/pages/not-found/index.js
index 111218ca7c3..dbb87504b4e 100644
--- a/packages/now-next/test/fixtures/00-i18n-support-no-shared-lambdas/pages/not-found/index.js
+++ b/packages/now-next/test/fixtures/00-i18n-support-no-shared-lambdas/pages/not-found/index.js
@@ -24,7 +24,7 @@ export default function Page(props) {
 export const getStaticProps = ({ locale, locales }) => {
   if (locale === 'en' || locale === 'nl') {
     return {
-      unstable_notFound: true,
+      notFound: true,
     };
   }
 
diff --git a/packages/now-next/test/fixtures/00-i18n-support/pages/not-found/fallback/[slug].js b/packages/now-next/test/fixtures/00-i18n-support/pages/not-found/fallback/[slug].js
index 992fec8c387..34805f6d3f3 100644
--- a/packages/now-next/test/fixtures/00-i18n-support/pages/not-found/fallback/[slug].js
+++ b/packages/now-next/test/fixtures/00-i18n-support/pages/not-found/fallback/[slug].js
@@ -26,7 +26,7 @@ export default function Page(props) {
 export const getStaticProps = ({ params, locale, locales }) => {
   if (locale === 'en' || locale === 'nl') {
     return {
-      unstable_notFound: true,
+      notFound: true,
     };
   }
 
diff --git a/packages/now-next/test/fixtures/00-i18n-support/pages/not-found/index.js b/packages/now-next/test/fixtures/00-i18n-support/pages/not-found/index.js
index 111218ca7c3..dbb87504b4e 100644
--- a/packages/now-next/test/fixtures/00-i18n-support/pages/not-found/index.js
+++ b/packages/now-next/test/fixtures/00-i18n-support/pages/not-found/index.js
@@ -24,7 +24,7 @@ export default function Page(props) {
 export const getStaticProps = ({ locale, locales }) => {
   if (locale === 'en' || locale === 'nl') {
     return {
-      unstable_notFound: true,
+      notFound: true,
     };
   }