diff --git a/src/vanna/base/base.py b/src/vanna/base/base.py
index 119bd622..c6d40297 100644
--- a/src/vanna/base/base.py
+++ b/src/vanna/base/base.py
@@ -79,7 +79,7 @@ def generate_followup_questions(self, question: str, **kwargs) -> str:
         numbers_removed = re.sub(r"^\d+\.\s*", "", llm_response, flags=re.MULTILINE)
         return numbers_removed.split("\n")
 
-    def generate_questions(self, **kwargs) -> list[str]:
+    def generate_questions(self, **kwargs) -> List[str]:
         """
         **Example:**
         ```python
@@ -94,7 +94,7 @@ def generate_questions(self, **kwargs) -> list[str]:
 
     # ----------------- Use Any Embeddings API ----------------- #
     @abstractmethod
-    def generate_embedding(self, data: str, **kwargs) -> list[float]:
+    def generate_embedding(self, data: str, **kwargs) -> List[float]:
         pass
 
     # ----------------- Use Any Database to Store and Retrieve Context ----------------- #
diff --git a/src/vanna/chromadb/chromadb_vector.py b/src/vanna/chromadb/chromadb_vector.py
index 796c08a4..6dec25a5 100644
--- a/src/vanna/chromadb/chromadb_vector.py
+++ b/src/vanna/chromadb/chromadb_vector.py
@@ -1,4 +1,5 @@
 import json
+from typing import List
 import uuid
 from abc import abstractmethod
 
@@ -34,7 +35,7 @@ def __init__(self, config=None):
             name="sql", embedding_function=default_ef
         )
 
-    def generate_embedding(self, data: str, **kwargs) -> list[float]:
+    def generate_embedding(self, data: str, **kwargs) -> List[float]:
         embedding = default_ef([data])
         if len(embedding) == 1:
             return embedding[0]