diff --git a/ai-sample/TokenizeDocFunction/requirements.txt b/ai-sample/TokenizeDocFunction/requirements.txt
index 1387373..5e483aa 100644
--- a/ai-sample/TokenizeDocFunction/requirements.txt
+++ b/ai-sample/TokenizeDocFunction/requirements.txt
@@ -3,6 +3,6 @@
 # Manually managing azure-functions-worker may cause unexpected issues
 
 azure-functions
-langchain==0.0.326
+langchain==0.3.0
 tiktoken==0.5.1
 pypdf==3.15.5