diff --git a/requirements.txt b/requirements.txt
index 1a4b75f..e172825 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,9 +1,7 @@
 langchain>=1.2.10
 langchain-openai>=0.3.0
-langgraph>=0.2.0
-langchain-ollama
-langchain-chroma
-langchain-tavily
-tavily-python
-chromadb
-python-dotenv
+langchain-ollama>=0.1.0
+langchain-chroma>=0.1.0
+langchain-tavily>=0.1.0
+chromadb>=0.4.0
+python-dotenv>=1.0.0