diff --git a/prisma/migrations/20230127120845_user_on_category/migration.sql b/prisma/migrations/20230127120845_user_on_category/migration.sql
new file mode 100644
index 0000000..6fc75d1
--- /dev/null
+++ b/prisma/migrations/20230127120845_user_on_category/migration.sql
@@ -0,0 +1,11 @@
+/*
+  Warnings:
+
+  - Added the required column `user_id` to the `Category` table without a default value. This is not possible if the table is not empty.
+
+*/
+-- AlterTable
+ALTER TABLE `Category` ADD COLUMN `user_id` INTEGER NOT NULL;
+
+-- AddForeignKey
+ALTER TABLE `Category` ADD CONSTRAINT `Category_user_id_fkey` FOREIGN KEY (`user_id`) REFERENCES `User`(`id`) ON DELETE RESTRICT ON UPDATE CASCADE;
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index 280fc3b..a9e3d37 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -8,7 +8,7 @@ datasource db {
 }
 
 model User {
-  id           Int       @id @default(autoincrement())
+  id           Int        @id @default(autoincrement())
   email        String
   password     String
   name         String
@@ -16,6 +16,7 @@ model User {
   created_at   DateTime
   updated_at   DateTime
   Snippet      Snippet[]
+  Category     Category[]
 }
 
 model Snippet {
@@ -37,6 +38,8 @@ model Snippet {
 model Category {
   id      Int       @id @default(autoincrement())
   name    String
+  user_id Int
+  user    User      @relation(fields: [user_id], references: [id])
   Snippet Snippet[]
 }