diff --git a/scripts/migration.js b/scripts/migration.js
index d07a8292..6a5b4867 100644
--- a/scripts/migration.js
+++ b/scripts/migration.js
@@ -46,6 +46,7 @@ async function checkTables() {
 async function dropKeys() {
   try {
     // drop keys
+    await prisma.$executeRaw`ALTER TABLE IF EXISTS "_prisma_migrations" DROP CONSTRAINT IF EXISTS "_prisma_migrations_pkey" cascade;`;
     await prisma.$executeRaw`ALTER TABLE IF EXISTS "account" DROP CONSTRAINT IF EXISTS "account_pkey" cascade;`;
     await prisma.$executeRaw`ALTER TABLE IF EXISTS "event" DROP CONSTRAINT IF EXISTS "event_pkey" cascade;`;
     await prisma.$executeRaw`ALTER TABLE IF EXISTS "session" DROP CONSTRAINT IF EXISTS "session_pkey" cascade;`;