diff --git a/src/Libs/Model.php b/src/Libs/Model.php
index 28935c9..d7b7175 100644
--- a/src/Libs/Model.php
+++ b/src/Libs/Model.php
@@ -72,7 +72,7 @@ class Model {
      *
      * @return bool
      */
-    public function beginTransaction(): bool
+    public static function beginTransaction(): bool
     {
         return static::db()->beginTransaction();
     }
@@ -83,7 +83,7 @@ class Model {
      *
      * @return bool
      */
-    public function rollBack(): bool
+    public static function rollBack(): bool
     {
         if ( static::db()->inTransaction())
             return static::db()->rollBack();
@@ -97,7 +97,7 @@ class Model {
      *
      * @return bool
      */
-    public function commit(): bool
+    public static function commit(): bool
     {
         if (static::db()->inTransaction())
             return static::db()->commit();