Update requirements.txt

requirements.txt

@@ -1,13 +1,16 @@
-gradio>=5.42.0
-langchain-community>=0.3.27
-langchain-openai>=0.1.0
+gradio==5.42.0
+
+langchain==0.3.27
+langchain-community==0.3.27
+langchain-openai==0.3.27
+langchain-text-splitters>=0.3.0,<1.0.0
+langchain-tavily>=0.1.0,<1.0.0
+
 faiss-cpu>=1.12.0
 sentence-transformers>=3.0.1
-openai>=1.35.0
+openai>=1.35.0,<2.0.0
 python-dotenv>=1.0.1
-langchain-text-splitters>=0.3.0
 tavily-python>=0.4.0
-langchain-tavily>=0.1.0
-numpy>=2.0.0
+numpy>=1.26.4
 beautifulsoup4>=4.12.0
 pypdf>=5.0.0