diff --git a/ai_ref_kits/agentic_llm_rag/requirements.txt b/ai_ref_kits/agentic_llm_rag/requirements.txt
index 70e2b8c2..48188cd4 100644
--- a/ai_ref_kits/agentic_llm_rag/requirements.txt
+++ b/ai_ref_kits/agentic_llm_rag/requirements.txt
@@ -1,24 +1,25 @@
 --extra-index-url https://download.pytorch.org/whl/cpu
 
-openvino==2024.4.0
-optimum-intel==1.19.0
-optimum==1.22.0
-nncf==2.13.0
+openvino==2024.6.0
+optimum-intel==1.21.0
+optimum==1.23.3
+nncf==2.14.1
 
-llama-index==0.11.2
-llama-index-llms-openvino==0.3.1
-llama-index-embeddings-openvino==0.3.1
-llama-index-postprocessor-openvino-rerank==0.3.0
-llama-index-vector-stores-faiss==0.2.1
+llama-index==0.12.9
+llama-index-llms-openvino==0.4.0
+llama-index-embeddings-openvino==0.5.1
+llama-index-postprocessor-openvino-rerank==0.4.1
+llama-index-vector-stores-faiss==0.3.0
 faiss-cpu==1.9.0
 
+# onnx>1.16.1 doesn't work on windows
 onnx==1.16.1
 onnxruntime==1.17.3
-torch==2.4.1
+torch==2.5.1
 
-transformers==4.44.2
+transformers==4.46.3
 librosa==0.10.2
 pyyaml==6.0.1
 PyMuPDF==1.24.10
 
-gradio==4.44.1
+gradio==5.10.0
diff --git a/ai_ref_kits/conversational_ai_chatbot/app.py b/ai_ref_kits/conversational_ai_chatbot/app.py
index 9de93008..43b96cf6 100644
--- a/ai_ref_kits/conversational_ai_chatbot/app.py
+++ b/ai_ref_kits/conversational_ai_chatbot/app.py
@@ -352,8 +352,8 @@ def synthesize(conversation: List[List[str]], audio: Tuple[int, np.ndarray]) ->
         Chatbot voice response (audio)
     """
     # if audio wasn't used in the conversation, return None
-    if not audio:
-        return None
+    # if not audio:
+    #     return None
 
     prompt = conversation[-1][1]