diff --git a/src/containerapp/requirements.txt b/src/containerapp/requirements.txt
index b7ef2f8..9d2be1d 100644
--- a/src/containerapp/requirements.txt
+++ b/src/containerapp/requirements.txt
@@ -20,7 +20,7 @@ aiofiles==23.2.1
 PyMuPDF==1.25.1
 PyPDF2==3.0.1
 langchain==0.3.12
-langchain-core==0.3.25
+langchain-core==1.2.11
 langchain-community==0.3.12
 langchain-openai==0.2.12
 tiktoken==0.8.0