diff --git a/code/addons/docs/src/blocks/components/ArgsTable/types.ts b/code/addons/docs/src/blocks/components/ArgsTable/types.ts
index c81327d82215..bfe991091df4 100644
--- a/code/addons/docs/src/blocks/components/ArgsTable/types.ts
+++ b/code/addons/docs/src/blocks/components/ArgsTable/types.ts
@@ -21,8 +21,8 @@ export interface JsDocTags {
 }
 
 export interface PropSummaryValue {
-  summary: string;
-  detail?: string;
+  summary: string | undefined;
+  detail?: string | undefined;
   required?: boolean;
 }
 
@@ -47,11 +47,11 @@ export interface ArgType {
     subcategory?: string;
     defaultValue?: {
       summary?: string | undefined;
-      detail?: string;
+      detail?: string | undefined;
     };
     type?: {
       summary?: string | undefined;
-      detail?: string;
+      detail?: string | undefined;
     };
     readonly?: boolean;
     [key: string]: any;
diff --git a/code/core/src/csf/story.ts b/code/core/src/csf/story.ts
index 0a128a1670a2..6ff038936383 100644
--- a/code/core/src/csf/story.ts
+++ b/code/core/src/csf/story.ts
@@ -126,13 +126,13 @@ export interface InputType {
     /** @see https://storybook.js.org/docs/api/arg-types#tablecategory */
     category?: string;
     /** @see https://storybook.js.org/docs/api/arg-types#tabledefaultvalue */
-    defaultValue?: { summary?: string; detail?: string };
+    defaultValue?: { summary?: string | undefined; detail?: string | undefined };
     /** @see https://storybook.js.org/docs/api/arg-types#tabledisable */
     disable?: boolean;
     /** @see https://storybook.js.org/docs/api/arg-types#tablesubcategory */
     subcategory?: string;
     /** @see https://storybook.js.org/docs/api/arg-types#tabletype */
-    type?: { summary?: string; detail?: string };
+    type?: { summary?: string | undefined; detail?: string | undefined };
   };
   /** @see https://storybook.js.org/docs/api/arg-types#type */
   type?: SBType | SBScalarType['name'];
diff --git a/code/core/src/docs-tools/argTypes/docgen/PropDef.ts b/code/core/src/docs-tools/argTypes/docgen/PropDef.ts
index 7fcbae1ae466..7c4613debe4a 100644
--- a/code/core/src/docs-tools/argTypes/docgen/PropDef.ts
+++ b/code/core/src/docs-tools/argTypes/docgen/PropDef.ts
@@ -15,8 +15,8 @@ export interface JsDocTags {
 }
 
 export interface PropSummaryValue {
-  summary?: string;
-  detail?: string;
+  summary?: string | undefined;
+  detail?: string | undefined;
 }
 
 export type PropType = PropSummaryValue;
diff --git a/code/core/src/types/modules/core-common.ts b/code/core/src/types/modules/core-common.ts
index d3a983905910..806d2af7491b 100644
--- a/code/core/src/types/modules/core-common.ts
+++ b/code/core/src/types/modules/core-common.ts
@@ -354,14 +354,14 @@ export interface ComponentManifest {
   id: string;
   path: string;
   name: string;
-  description?: string;
-  import?: string;
-  summary?: string;
+  description?: string | undefined;
+  import?: string | undefined;
+  summary?: string | undefined;
   stories: {
     name: string;
-    snippet?: string;
-    description?: string;
-    summary?: string;
+    snippet?: string | undefined;
+    description?: string | undefined;
+    summary?: string | undefined;
     error?: { name: string; message: string };
   }[];
   jsDocTags: Record<string, string[]>;