diff --git a/requirements.txt b/requirements.txt
index 33db4f6..5bfa65c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,4 @@
-langgraph
-langchain-openai
+langgraph>=0.2.0
+langchain-openai>=0.3.0
+langchain-core>=0.3.0
+python-dotenv>=1.0.0