diff --git a/examples/foundational/22b-natural-conversation-proposal.py b/examples/foundational/22b-natural-conversation-proposal.py
index 417aeca76..290f6624c 100644
--- a/examples/foundational/22b-natural-conversation-proposal.py
+++ b/examples/foundational/22b-natural-conversation-proposal.py
@@ -369,7 +369,7 @@ async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
         await task.queue_frames([LLMRunFrame()])
 
     @transport.event_handler("on_app_message")
-    async def on_app_message(transport, message):
+    async def on_app_message(transport, message, sender):
         logger.debug(f"Received app message: {message}")
         if "message" not in message:
             return
diff --git a/examples/foundational/22c-natural-conversation-mixed-llms.py b/examples/foundational/22c-natural-conversation-mixed-llms.py
index e4c554b26..83c153f80 100644
--- a/examples/foundational/22c-natural-conversation-mixed-llms.py
+++ b/examples/foundational/22c-natural-conversation-mixed-llms.py
@@ -577,7 +577,7 @@ async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
         await task.queue_frames([LLMRunFrame()])
 
     @transport.event_handler("on_app_message")
-    async def on_app_message(transport, message):
+    async def on_app_message(transport, message, sender):
         logger.debug(f"Received app message: {message}")
         if "message" not in message:
             return
diff --git a/examples/foundational/22d-natural-conversation-gemini-audio.py b/examples/foundational/22d-natural-conversation-gemini-audio.py
index d7ecf2ba7..2dbdac377 100644
--- a/examples/foundational/22d-natural-conversation-gemini-audio.py
+++ b/examples/foundational/22d-natural-conversation-gemini-audio.py
@@ -765,7 +765,7 @@ async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
         await task.queue_frames([LLMRunFrame()])
 
     @transport.event_handler("on_app_message")
-    async def on_app_message(transport, message):
+    async def on_app_message(transport, message, sender):
         logger.debug(f"Received app message: {message}")
         if "message" not in message:
             return