diff --git a/etc/api/angular_devkit/core/src/_golden-api.d.ts b/etc/api/angular_devkit/core/src/_golden-api.d.ts
index 93168b67c547..0572bee4faef 100644
--- a/etc/api/angular_devkit/core/src/_golden-api.d.ts
+++ b/etc/api/angular_devkit/core/src/_golden-api.d.ts
@@ -715,6 +715,7 @@ export interface PromptDefinition {
     }>;
     message: string;
     multiselect?: boolean;
+    propertyTypes: Set<string>;
     raw?: string | JsonObject;
     type: string;
     validator?: (value: JsonValue) => boolean | string | Promise<boolean | string>;
diff --git a/packages/angular_devkit/core/src/json/schema/interface.ts b/packages/angular_devkit/core/src/json/schema/interface.ts
index c62f08237d36..2e4375511a03 100644
--- a/packages/angular_devkit/core/src/json/schema/interface.ts
+++ b/packages/angular_devkit/core/src/json/schema/interface.ts
@@ -105,6 +105,7 @@ export interface PromptDefinition {
 
   raw?: string | JsonObject;
   multiselect?: boolean;
+  propertyTypes: Set<string>;
 }
 
 export type PromptProvider = (definitions: Array<PromptDefinition>)
diff --git a/packages/angular_devkit/core/src/json/schema/registry.ts b/packages/angular_devkit/core/src/json/schema/registry.ts
index a2f8df45077a..50c5ed4bbb3c 100644
--- a/packages/angular_devkit/core/src/json/schema/registry.ts
+++ b/packages/angular_devkit/core/src/json/schema/registry.ts
@@ -590,6 +590,7 @@ export class CoreSchemaRegistry implements SchemaRegistry {
           raw: schema,
           items,
           multiselect,
+          propertyTypes,
           default:
             typeof (parentSchema as JsonObject).default == 'object' &&
             (parentSchema as JsonObject).default !== null &&