From b2b94424db783397b6788c7fbdf8f04b0d5b7a8e Mon Sep 17 00:00:00 2001
From: Nuno Campos <nuno@langchain.dev>
Date: Fri, 10 Nov 2023 09:52:38 +0000
Subject: [PATCH] Update return type for Runnable.__or__ (#12880)

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---
 libs/langchain/langchain/schema/runnable/base.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/libs/langchain/langchain/schema/runnable/base.py b/libs/langchain/langchain/schema/runnable/base.py
index b99fce2c836f4..39c99d14637d9 100644
--- a/libs/langchain/langchain/schema/runnable/base.py
+++ b/libs/langchain/langchain/schema/runnable/base.py
@@ -258,7 +258,7 @@ def __or__(
             Callable[[Iterator[Any]], Iterator[Other]],
             Mapping[str, Union[Runnable[Any, Other], Callable[[Any], Other], Any]],
         ],
-    ) -> Runnable[Input, Other]:
+    ) -> RunnableSerializable[Input, Other]:
         """Compose this runnable with another object to create a RunnableSequence."""
         return RunnableSequence(first=self, last=coerce_to_runnable(other))
 
@@ -270,7 +270,7 @@ def __ror__(
             Callable[[Iterator[Other]], Iterator[Any]],
             Mapping[str, Union[Runnable[Other, Any], Callable[[Other], Any], Any]],
         ],
-    ) -> Runnable[Other, Output]:
+    ) -> RunnableSerializable[Other, Output]:
         """Compose this runnable with another object to create a RunnableSequence."""
         return RunnableSequence(first=coerce_to_runnable(other), last=self)
 
@@ -1162,7 +1162,7 @@ def __or__(
             Callable[[Iterator[Any]], Iterator[Other]],
             Mapping[str, Union[Runnable[Any, Other], Callable[[Any], Other], Any]],
         ],
-    ) -> Runnable[Input, Other]:
+    ) -> RunnableSerializable[Input, Other]:
         if isinstance(other, RunnableSequence):
             return RunnableSequence(
                 first=self.first,
@@ -1184,7 +1184,7 @@ def __ror__(
             Callable[[Iterator[Other]], Iterator[Any]],
             Mapping[str, Union[Runnable[Other, Any], Callable[[Other], Any], Any]],
         ],
-    ) -> Runnable[Other, Output]:
+    ) -> RunnableSerializable[Other, Output]:
         if isinstance(other, RunnableSequence):
             return RunnableSequence(
                 first=other.first,