diff --git a/internal-packages/database/prisma/migrations/20260409120000_add_project_alert_storage_lookup_index/migration.sql b/internal-packages/database/prisma/migrations/20260409120000_add_project_alert_storage_lookup_index/migration.sql
new file mode 100644
index 0000000000..90dbcae274
--- /dev/null
+++ b/internal-packages/database/prisma/migrations/20260409120000_add_project_alert_storage_lookup_index/migration.sql
@@ -0,0 +1,2 @@
+-- CreateIndex
+CREATE INDEX CONCURRENTLY IF NOT EXISTS "ProjectAlertStorage_alertChannelId_alertType_storageId_idx" ON "ProjectAlertStorage"("alertChannelId", "alertType", "storageId");
diff --git a/internal-packages/database/prisma/schema.prisma b/internal-packages/database/prisma/schema.prisma
index 1de0aaf1dd..071067fad6 100644
--- a/internal-packages/database/prisma/schema.prisma
+++ b/internal-packages/database/prisma/schema.prisma
@@ -2198,6 +2198,8 @@ model ProjectAlertStorage {
 
   createdAt DateTime @default(now())
   updatedAt DateTime @updatedAt
+
+  @@index([alertChannelId, alertType, storageId])
 }
 
 model OrganizationIntegration {