diff --git a/api/requirements.txt b/api/requirements.txt
index 7d4b310..7ff3369 100644
--- a/api/requirements.txt
+++ b/api/requirements.txt
@@ -14,7 +14,7 @@ langchain>=0.1.0
 langchain-openai>=0.0.5
 langgraph>=0.0.20
 langgraph-checkpoint-sqlite>=1.0.0
-langchain-community>=0.0.20
+langchain-community>=0.4.1
 
 # LLM APIs
 openai>=1.10.0