diff --git a/ormar/protocols/relation_protocol.py b/ormar/protocols/relation_protocol.py
index ec0fe98..bc06093 100644
--- a/ormar/protocols/relation_protocol.py
+++ b/ormar/protocols/relation_protocol.py
@@ -1,4 +1,9 @@
-from typing import Protocol, TYPE_CHECKING, Type, Union
+from typing import TYPE_CHECKING, Type, Union
+
+try:
+    from typing import Protocol
+except ImportError:
+    from typing_extentions import Protocol
 
 if TYPE_CHECKING:  # pragma: nocover
     from ormar import Model