diff --git a/libs/langchain/langchain/text_splitter.py b/libs/langchain/langchain/text_splitter.py
index d8b712b22aa..25c121866ab 100644
--- a/libs/langchain/langchain/text_splitter.py
+++ b/libs/langchain/langchain/text_splitter.py
@@ -647,7 +647,7 @@ class Tokenizer:
     """Overlap in tokens between chunks"""
     tokens_per_chunk: int
     """Maximum number of tokens per chunk"""
-    decode: Callable[[list[int]], str]
+    decode: Callable[[List[int]], str]
     """ Function to decode a list of token ids to a string"""
     encode: Callable[[str], List[int]]
     """ Function to encode a string to a list of token ids"""