diff --git a/db.go b/db.go
index 7aadd20a..90026cea 100644
--- a/db.go
+++ b/db.go
@@ -85,6 +85,9 @@ func (h *Headscale) openDB() (*gorm.DB, error) {
 			DisableForeignKeyConstraintWhenMigrating: true,
 			Logger:                                   log,
 		})
+
+		sqlDB, _ := db.DB()
+		sqlDB.SetMaxOpenConns(1)
 	case Postgres:
 		db, err = gorm.Open(postgres.Open(h.dbString), &gorm.Config{
 			DisableForeignKeyConstraintWhenMigrating: true,