diff --git a/requirements.txt b/requirements.txt
index fcc4e16..0ceca0d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,3 @@
-# No external dependencies required for this minimal middleware.
-
+langchain>=1.0.0
+langgraph>=1.0.0
+langchain-openai>=0.2.0