diff --git a/backend/prisma/schema.prisma b/backend/prisma/schema.prisma
index 7e758290..abbe0f53 100644
--- a/backend/prisma/schema.prisma
+++ b/backend/prisma/schema.prisma
@@ -28,6 +28,7 @@ model User {
   pantryItems PantryItem[]
   mealPlanEntries MealPlanEntry[]
   receiptAliases  ReceiptAlias[]
+  unitMappings     UnitMapping[]
 }
 
 model Product {
@@ -54,6 +55,7 @@ model Product {
   categoryId        Int?
   categoryRef       Category?       @relation(fields: [categoryId], references: [id], onDelete: SetNull)
   isPrivate         Boolean         @default(false)
+  unitMappings      UnitMapping[]
 }
 
 model Category {