diff --git a/@packages/@hooks/attribute-hooks/src/__tests__/msw-handlers.ts b/@packages/@hooks/attribute-hooks/src/__tests__/msw-handlers.ts
index 993a4a43a..ed81d6eee 100644
--- a/@packages/@hooks/attribute-hooks/src/__tests__/msw-handlers.ts
+++ b/@packages/@hooks/attribute-hooks/src/__tests__/msw-handlers.ts
@@ -17,6 +17,7 @@ export const mockDefinitions: AttributeDefinition[] = [
     isRequired: false,
     isUnique: false,
     isSearchable: true,
+    isMultiple: false,
     enumValues: ['blonde', 'brunette', 'black', 'red', 'gray'],
     displayOrder: 1,
     grouping: 'physical',
@@ -35,6 +36,7 @@ export const mockDefinitions: AttributeDefinition[] = [
     isRequired: true,
     isUnique: false,
     isSearchable: true,
+    isMultiple: false,
     enumValues: ['18-24', '25-34', '35-44', '45-54', '55+'],
     displayOrder: 2,
     grouping: 'demographics',
@@ -51,6 +53,7 @@ export const mockDefinitions: AttributeDefinition[] = [
     isRequired: false,
     isUnique: false,
     isSearchable: true,
+    isMultiple: false,
     minValue: 48,
     maxValue: 96,
     displayOrder: 3,
@@ -123,6 +126,7 @@ export const handlers = [
       isRequired: body.isRequired ?? false,
       isUnique: body.isUnique ?? false,
       isSearchable: body.isSearchable ?? false,
+      isMultiple: body.isMultiple ?? false,
       minValue: body.minValue,
       maxValue: body.maxValue,
       regexPattern: body.regexPattern,