diff --git a/prisma/migrations/20250324164432_add_unique_token/migration.sql b/prisma/migrations/20250324164432_add_unique_token/migration.sql
new file mode 100644
index 0000000..54c1f94
--- /dev/null
+++ b/prisma/migrations/20250324164432_add_unique_token/migration.sql
@@ -0,0 +1,8 @@
+/*
+  Warnings:
+
+  - A unique constraint covering the columns `[token]` on the table `session` will be added. If there are existing duplicate values, this will fail.
+
+*/
+-- CreateIndex
+CREATE UNIQUE INDEX `session_token_key` ON `session`(`token`);
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index 5970e08..0b04567 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -429,7 +429,7 @@ model users {
 model session {
   id        String   @id
   userId    String   @db.VarChar(255)
-  token     String
+  token     String   @unique
   expiresAt DateTime
   ipAddress String?
   userAgent String?