diff --git a/langchain/embeddings/openai.py b/langchain/embeddings/openai.py
index 9402f42a..9eb48852 100644
--- a/langchain/embeddings/openai.py
+++ b/langchain/embeddings/openai.py
@@ -9,6 +9,7 @@ from typing import (
     List,
     Literal,
     Optional,
+    Sequence,
     Set,
     Tuple,
     Union,
@@ -115,7 +116,7 @@ class OpenAIEmbeddings(BaseModel, Embeddings):
     openai_api_key: Optional[str] = None
     openai_organization: Optional[str] = None
     allowed_special: Union[Literal["all"], Set[str]] = set()
-    disallowed_special: Union[Literal["all"], Set[str], Tuple[()]] = "all"
+    disallowed_special: Union[Literal["all"], Set[str], Sequence[str]] = "all"
     chunk_size: int = 1000
     """Maximum number of texts to embed in each batch"""
     max_retries: int = 6