Update requirements.txt

requirements.txt

@@ -1,11 +1,20 @@
-openai>=1.40
+# Core AI and LangChain Framework
+openai>=1.4.0
 langchain>=0.2
 langchain-openai>=0.1
 langchain-community>=0.2
-langchain-huggingface>=0.0.3  # <-- ADD THIS NEW PACKAGE
+langchain-huggingface>=0.0.3
+pydantic>=2
+
+# Vector Store and Embeddings
 faiss-cpu>=1.8
 sentence-transformers>=3.0
-gradio>=4.44
+
+# User Interface
+gradio>=4.20.0
+# gradio>=4.44
+
+# Utilities
 gTTS>=2.5
-pydantic>=2
-pytube>=15.0.0
+pytube>=15.0.0
+python-dotenv>=1.0.0