Update requirements.txt

requirements.txt

@@ -2,17 +2,17 @@ gradio==4.44.0
 requests==2.32.3
 
 # --- LangChain ecosystem ---
-langchain==0.3.9
+langchain==0.3.15
 langchain-core==0.3.34
-langchain-community==0.3.9
-langchain-experimental==0.3.1
+langchain-community==0.3.15
+langchain-experimental==0.3.3
 langchain-openai==0.3.4
 langchain-huggingface==1.0.0
-langgraph==0.2.22
+langgraph==0.2.55
 
 # --- Google + Hugging Face + Tools ---
 google-generativeai==0.8.5
-langchain-google-genai==2.0.0
+langchain-google-genai==2.0.5
 
 # --- Search / External sources ---
 duckduckgo-search==5.3.1