diff --git a/estel/requirements.txt b/estel/requirements.txt
index 84742e7..0465159 100644
--- a/estel/requirements.txt
+++ b/estel/requirements.txt
@@ -1,7 +1,7 @@
 langchain==0.3.23
 langchain-cohere==0.4.4
 langchain-community==0.3.21
-langchain-core==0.3.51
+langchain-core==0.3.80
 langchain-openai==0.3.12
 langchain-text-splitters==0.3.8
 faiss-cpu==1.10.0