diff --git a/ai-hub/app/core/pipelines/dspy_rag.py b/ai-hub/app/core/pipelines/dspy_rag.py
index 2a76510..7e2f243 100644
--- a/ai-hub/app/core/pipelines/dspy_rag.py
+++ b/ai-hub/app/core/pipelines/dspy_rag.py
@@ -24,11 +24,12 @@
 
 
 class AnswerWithHistory(dspy.Signature):
-    """Given the context and chat history, answer the user's question."""
-    context = dspy.InputField(desc="Relevant document snippets from the knowledge base.")
-    chat_history = dspy.InputField(desc="The ongoing conversation between the user and the AI.")
-    question = dspy.InputField()
-    answer = dspy.OutputField()
+    """Generate a natural and context-aware answer to the user's question using the provided knowledge and conversation history."""
+
+    context = dspy.InputField(desc="Relevant excerpts from the knowledge base to support the answer.")
+    chat_history = dspy.InputField(desc="The ongoing dialogue between the user and the AI, providing conversational context.")
+    question = dspy.InputField(desc="The user's current question.")
+    answer = dspy.OutputField(desc="A well-formed answer suitable for delivery in an audio play format.")
 
 
 class DspyRagPipeline(dspy.Module):

diff --git a/ai-hub/app/core/pipelines/dspy_rag.py b/ai-hub/app/core/pipelines/dspy_rag.py
index 2a76510..7e2f243 100644
--- a/ai-hub/app/core/pipelines/dspy_rag.py
+++ b/ai-hub/app/core/pipelines/dspy_rag.py
@@ -24,11 +24,12 @@
 
 
 class AnswerWithHistory(dspy.Signature):
-    """Given the context and chat history, answer the user's question."""
-    context = dspy.InputField(desc="Relevant document snippets from the knowledge base.")
-    chat_history = dspy.InputField(desc="The ongoing conversation between the user and the AI.")
-    question = dspy.InputField()
-    answer = dspy.OutputField()
+    """Generate a natural and context-aware answer to the user's question using the provided knowledge and conversation history."""
+
+    context = dspy.InputField(desc="Relevant excerpts from the knowledge base to support the answer.")
+    chat_history = dspy.InputField(desc="The ongoing dialogue between the user and the AI, providing conversational context.")
+    question = dspy.InputField(desc="The user's current question.")
+    answer = dspy.OutputField(desc="A well-formed answer suitable for delivery in an audio play format.")
 
 
 class DspyRagPipeline(dspy.Module):
diff --git a/ai-hub/app/core/providers/tts/gcloud_tts.py b/ai-hub/app/core/providers/tts/gcloud_tts.py
index bfdb1b1..0ae78a6 100644
--- a/ai-hub/app/core/providers/tts/gcloud_tts.py
+++ b/ai-hub/app/core/providers/tts/gcloud_tts.py
@@ -14,14 +14,21 @@
 # New concrete class for the Google Cloud Text-to-Speech API
 class GCloudTTSProvider(TTSProvider):
     # This provider uses Google's dedicated TTS API. The voices are different from Gemini.
-    # Here is a small, representative list of available WaveNet voices.
-    # The full list is much larger and can be found in the official documentation.
+    # Updated with the full list of available Chirp3 HD voices you provided.
     AVAILABLE_VOICES = [
-        "en-US-Wavenet-A", "en-US-Wavenet-B", "en-US-Wavenet-C", "en-US-Wavenet-D",
-        "en-US-Wavenet-E", "en-US-Wavenet-F", "en-US-Wavenet-G", "en-US-Wavenet-H"
+        "en-US-Chirp3-HD-Achernar", "en-US-Chirp3-HD-Achird", "en-US-Chirp3-HD-Algenib", 
+        "en-US-Chirp3-HD-Algieba", "en-US-Chirp3-HD-Alnilam", "en-US-Chirp3-HD-Aoede", 
+        "en-US-Chirp3-HD-Autonoe", "en-US-Chirp3-HD-Callirrhoe", "en-US-Chirp3-HD-Charon", 
+        "en-US-Chirp3-HD-Despina", "en-US-Chirp3-HD-Enceladus", "en-US-Chirp3-HD-Erinome", 
+        "en-US-Chirp3-HD-Fenrir", "en-US-Chirp3-HD-Gacrux", "en-US-Chirp3-HD-Iapetus", 
+        "en-US-Chirp3-HD-Kore", "en-US-Chirp3-HD-Laomedeia", "en-US-Chirp3-HD-Leda", 
+        "en-US-Chirp3-HD-Orus", "en-US-Chirp3-HD-Puck", "en-US-Chirp3-HD-Pulcherrima", 
+        "en-US-Chirp3-HD-Rasalgethi", "en-US-Chirp3-HD-Sadachbia", "en-US-Chirp3-HD-Sadaltager", 
+        "en-US-Chirp3-HD-Schedar", "en-US-Chirp3-HD-Sulafat", "en-US-Chirp3-HD-Umbriel", 
+        "en-US-Chirp3-HD-Vindemiatrix", "en-US-Chirp3-HD-Zephyr", "en-US-Chirp3-HD-Zubenelgenubi"
     ]
 
-    def __init__(self, api_key: str, voice_name: str = "en-US-Wavenet-D"):
+    def __init__(self, api_key: str, voice_name: str = "en-US-Chirp3-HD-Kore"):
         if voice_name not in self.AVAILABLE_VOICES:
             raise ValueError(f"Invalid voice name: {voice_name}. Choose from {self.AVAILABLE_VOICES}")
             

diff --git a/ai-hub/app/core/pipelines/dspy_rag.py b/ai-hub/app/core/pipelines/dspy_rag.py
index 2a76510..7e2f243 100644
--- a/ai-hub/app/core/pipelines/dspy_rag.py
+++ b/ai-hub/app/core/pipelines/dspy_rag.py
@@ -24,11 +24,12 @@
 
 
 class AnswerWithHistory(dspy.Signature):
-    """Given the context and chat history, answer the user's question."""
-    context = dspy.InputField(desc="Relevant document snippets from the knowledge base.")
-    chat_history = dspy.InputField(desc="The ongoing conversation between the user and the AI.")
-    question = dspy.InputField()
-    answer = dspy.OutputField()
+    """Generate a natural and context-aware answer to the user's question using the provided knowledge and conversation history."""
+
+    context = dspy.InputField(desc="Relevant excerpts from the knowledge base to support the answer.")
+    chat_history = dspy.InputField(desc="The ongoing dialogue between the user and the AI, providing conversational context.")
+    question = dspy.InputField(desc="The user's current question.")
+    answer = dspy.OutputField(desc="A well-formed answer suitable for delivery in an audio play format.")
 
 
 class DspyRagPipeline(dspy.Module):
diff --git a/ai-hub/app/core/providers/tts/gcloud_tts.py b/ai-hub/app/core/providers/tts/gcloud_tts.py
index bfdb1b1..0ae78a6 100644
--- a/ai-hub/app/core/providers/tts/gcloud_tts.py
+++ b/ai-hub/app/core/providers/tts/gcloud_tts.py
@@ -14,14 +14,21 @@
 # New concrete class for the Google Cloud Text-to-Speech API
 class GCloudTTSProvider(TTSProvider):
     # This provider uses Google's dedicated TTS API. The voices are different from Gemini.
-    # Here is a small, representative list of available WaveNet voices.
-    # The full list is much larger and can be found in the official documentation.
+    # Updated with the full list of available Chirp3 HD voices you provided.
     AVAILABLE_VOICES = [
-        "en-US-Wavenet-A", "en-US-Wavenet-B", "en-US-Wavenet-C", "en-US-Wavenet-D",
-        "en-US-Wavenet-E", "en-US-Wavenet-F", "en-US-Wavenet-G", "en-US-Wavenet-H"
+        "en-US-Chirp3-HD-Achernar", "en-US-Chirp3-HD-Achird", "en-US-Chirp3-HD-Algenib", 
+        "en-US-Chirp3-HD-Algieba", "en-US-Chirp3-HD-Alnilam", "en-US-Chirp3-HD-Aoede", 
+        "en-US-Chirp3-HD-Autonoe", "en-US-Chirp3-HD-Callirrhoe", "en-US-Chirp3-HD-Charon", 
+        "en-US-Chirp3-HD-Despina", "en-US-Chirp3-HD-Enceladus", "en-US-Chirp3-HD-Erinome", 
+        "en-US-Chirp3-HD-Fenrir", "en-US-Chirp3-HD-Gacrux", "en-US-Chirp3-HD-Iapetus", 
+        "en-US-Chirp3-HD-Kore", "en-US-Chirp3-HD-Laomedeia", "en-US-Chirp3-HD-Leda", 
+        "en-US-Chirp3-HD-Orus", "en-US-Chirp3-HD-Puck", "en-US-Chirp3-HD-Pulcherrima", 
+        "en-US-Chirp3-HD-Rasalgethi", "en-US-Chirp3-HD-Sadachbia", "en-US-Chirp3-HD-Sadaltager", 
+        "en-US-Chirp3-HD-Schedar", "en-US-Chirp3-HD-Sulafat", "en-US-Chirp3-HD-Umbriel", 
+        "en-US-Chirp3-HD-Vindemiatrix", "en-US-Chirp3-HD-Zephyr", "en-US-Chirp3-HD-Zubenelgenubi"
     ]
 
-    def __init__(self, api_key: str, voice_name: str = "en-US-Wavenet-D"):
+    def __init__(self, api_key: str, voice_name: str = "en-US-Chirp3-HD-Kore"):
         if voice_name not in self.AVAILABLE_VOICES:
             raise ValueError(f"Invalid voice name: {voice_name}. Choose from {self.AVAILABLE_VOICES}")
             
diff --git a/ai-hub/requirements.txt b/ai-hub/requirements.txt
index c455aa1..d4e6495 100644
--- a/ai-hub/requirements.txt
+++ b/ai-hub/requirements.txt
@@ -7,7 +7,7 @@
 requests
 anyio
 sqlalchemy
-psycopg2
+psycopg2-binary
 pytest-asyncio
 pytest-tornasync
 pytest-trio