diff --git a/requirements.txt b/requirements.txt
index 9646e46..7d906b0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -45,7 +45,7 @@ jupyter_server==2.14.2
 jupyter_server_terminals==0.5.3
 jupyterlab-pygments==0.3.0
 langchain==0.2.12 
-langchainhub==0.1.20
+langchainhub==0.1.21
 langchain-community==0.2.11
 langchain-core==0.2.29
 langchain-openai==0.1.21