diff --git a/lib/preview-web/src/PreviewWeb.integration.test.ts b/lib/preview-web/src/PreviewWeb.integration.test.ts
index 97715ff4a7b..b1f636beb08 100644
--- a/lib/preview-web/src/PreviewWeb.integration.test.ts
+++ b/lib/preview-web/src/PreviewWeb.integration.test.ts
@@ -52,7 +52,7 @@ beforeEach(() => {
   projectAnnotations.renderToDOM.mockReset();
   projectAnnotations.render.mockClear();
   projectAnnotations.decorators[0].mockClear();
-  projectAnnotations.parameters.docs.renderer = () => new DocsRenderer();
+  projectAnnotations.parameters.docs.renderer = () => new DocsRenderer() as any;
 
   addons.setChannel(mockChannel as any);
   addons.setServerChannel(createMockChannel());
diff --git a/lib/preview-web/src/PreviewWeb.mockdata.ts b/lib/preview-web/src/PreviewWeb.mockdata.ts
index 23384cb3d0f..9be71617b30 100644
--- a/lib/preview-web/src/PreviewWeb.mockdata.ts
+++ b/lib/preview-web/src/PreviewWeb.mockdata.ts
@@ -55,18 +55,21 @@ export const storyIndex: StoryIndex = {
   v: 4,
   entries: {
     'component-one--a': {
+      type: 'story',
       id: 'component-one--a',
       title: 'Component One',
       name: 'A',
       importPath: './src/ComponentOne.stories.js',
     },
     'component-one--b': {
+      type: 'story',
       id: 'component-one--b',
       title: 'Component One',
       name: 'B',
       importPath: './src/ComponentOne.stories.js',
     },
     'component-two--c': {
+      type: 'story',
       id: 'component-two--c',
       title: 'Component Two',
       name: 'C',
diff --git a/lib/preview-web/src/PreviewWeb.test.ts b/lib/preview-web/src/PreviewWeb.test.ts
index ef52ab5d4ee..5d7c76986d0 100644
--- a/lib/preview-web/src/PreviewWeb.test.ts
+++ b/lib/preview-web/src/PreviewWeb.test.ts
@@ -286,6 +286,7 @@ describe('PreviewWeb', () => {
             entries: {
               ...storyIndex.entries,
               'component-one--d': {
+                type: 'story',
                 id: 'component-one--d',
                 title: 'Component One',
                 name: 'D',
@@ -336,6 +337,7 @@ describe('PreviewWeb', () => {
               entries: {
                 ...storyIndex.entries,
                 'component-one--d': {
+                  type: 'story',
                   id: 'component-one--d',
                   title: 'Component One',
                   name: 'D',
diff --git a/lib/store/src/StoryStore.test.ts b/lib/store/src/StoryStore.test.ts
index fc844987e42..6c08fbdda6c 100644
--- a/lib/store/src/StoryStore.test.ts
+++ b/lib/store/src/StoryStore.test.ts
@@ -46,18 +46,21 @@ const storyIndex: StoryIndex = {
   v: 4,
   entries: {
     'component-one--a': {
+      type: 'story',
       id: 'component-one--a',
       title: 'Component One',
       name: 'A',
       importPath: './src/ComponentOne.stories.js',
     },
     'component-one--b': {
+      type: 'story',
       id: 'component-one--b',
       title: 'Component One',
       name: 'B',
       importPath: './src/ComponentOne.stories.js',
     },
     'component-two--c': {
+      type: 'story',
       id: 'component-two--c',
       title: 'Component Two',
       name: 'C',
@@ -235,6 +238,7 @@ describe('StoryStore', () => {
           entries: {
             ...storyIndex.entries,
             'new-component--story': {
+              type: 'story',
               id: 'new-component--story',
               title: 'New Component',
               name: 'Story',
@@ -266,6 +270,7 @@ describe('StoryStore', () => {
           v: 4,
           entries: {
             'component-one--a': {
+              type: 'story',
               id: 'component-one--a',
               title: 'Component One',
               name: 'A',
@@ -296,6 +301,7 @@ describe('StoryStore', () => {
           v: 4,
           entries: {
             'component-one--a': {
+              type: 'story',
               id: 'component-one--a',
               title: 'Component One',
               name: 'A',
diff --git a/lib/store/src/types.ts b/lib/store/src/types.ts
index 17ca8a9a986..e8afb7db175 100644
--- a/lib/store/src/types.ts
+++ b/lib/store/src/types.ts
@@ -98,7 +98,7 @@ interface BaseIndexEntry {
   importPath: Path;
 }
 export type StoryIndexEntry = BaseIndexEntry & {
-  type?: 'story';
+  type: 'story';
 };
 
 export type DocsIndexEntry = BaseIndexEntry & {