Update requirements.txt

requirements.txt

@@ -1,20 +1,20 @@
 # Core dependencies
-langchain==0.2.11
+langchain>=0.2.12
 langchain_groq==0.1.5
-langchain-community==0.2.11
+langchain-community>=0.2.11
 
 # Embedding models
-sentence-transformers==2.7.0
-transformers==4.41.2
-torch==2.3.1
+sentence-transformers>=2.7.0
+transformers>=4.41.2
+torch>=2.3.1
 
 # Document processing
-pypdf==4.2.0
-chromadb==0.5.5
+pypdf>=4.2.0
+chromadb>=0.5.5
 
 # UI
-gradio==4.36.1
+gradio>=4.36.1
 
 # Utilities
-tqdm==4.66.4
-python-dotenv==1.0.1
+tqdm>=4.66.4
+python-dotenv>=1.0.1