From 33e146decd5aba4e53bde6dbbfe3324cfb9f903e Mon Sep 17 00:00:00 2001
From: Tanmay Chaudhari <7712083+tanmayc25@users.noreply.github.com>
Date: Fri, 27 Mar 2026 12:06:26 +0530
Subject: [PATCH 1/2] fix(lemonslice): add missing on_dtmf_event callback in
 DailyCallbacks construction

DailyCallbacks gained a required on_dtmf_event field in PR #4047.
PR #4079 fixed this for TavusTransportClient but
LemonSliceTransportClient.setup() was not updated, causing a pydantic
ValidationError at pipeline setup time.
---
 changelog/XXXX.fixed.md                        | 1 +
 src/pipecat/transports/lemonslice/transport.py | 1 +
 2 files changed, 2 insertions(+)
 create mode 100644 changelog/XXXX.fixed.md

diff --git a/changelog/XXXX.fixed.md b/changelog/XXXX.fixed.md
new file mode 100644
index 000000000..8fe264f27
--- /dev/null
+++ b/changelog/XXXX.fixed.md
@@ -0,0 +1 @@
+Added missing `on_dtmf_event` callback to `LemonSliceTransportClient.setup()` `DailyCallbacks` construction, fixing a `ValidationError` at pipeline setup time.
diff --git a/src/pipecat/transports/lemonslice/transport.py b/src/pipecat/transports/lemonslice/transport.py
index 6a6894167..4cdf99ca9 100644
--- a/src/pipecat/transports/lemonslice/transport.py
+++ b/src/pipecat/transports/lemonslice/transport.py
@@ -181,6 +181,7 @@ class LemonSliceTransportClient:
                 on_dialout_stopped=partial(self._on_handle_callback, "on_dialout_stopped"),
                 on_dialout_error=partial(self._on_handle_callback, "on_dialout_error"),
                 on_dialout_warning=partial(self._on_handle_callback, "on_dialout_warning"),
+                on_dtmf_event=partial(self._on_handle_callback, "on_dtmf_event"),
                 on_participant_joined=self._callbacks.on_participant_joined,
                 on_participant_left=self._callbacks.on_participant_left,
                 on_participant_updated=partial(self._on_handle_callback, "on_participant_updated"),

From 5e61a57582f786ca05b4a46a7173fb5942b03bef Mon Sep 17 00:00:00 2001
From: Mark Backman <mark@daily.co>
Date: Fri, 27 Mar 2026 10:16:25 -0400
Subject: [PATCH 2/2] Fix changelog entry for #4161

---
 changelog/4161.fixed.md | 1 +
 changelog/XXXX.fixed.md | 1 -
 2 files changed, 1 insertion(+), 1 deletion(-)
 create mode 100644 changelog/4161.fixed.md
 delete mode 100644 changelog/XXXX.fixed.md

diff --git a/changelog/4161.fixed.md b/changelog/4161.fixed.md
new file mode 100644
index 000000000..f8dc3c670
--- /dev/null
+++ b/changelog/4161.fixed.md
@@ -0,0 +1 @@
+- Added missing `on_dtmf_event` callback to `LemonSliceTransportClient.setup()` `DailyCallbacks` construction, fixing a `ValidationError` at pipeline setup time.
diff --git a/changelog/XXXX.fixed.md b/changelog/XXXX.fixed.md
deleted file mode 100644
index 8fe264f27..000000000
--- a/changelog/XXXX.fixed.md
+++ /dev/null
@@ -1 +0,0 @@
-Added missing `on_dtmf_event` callback to `LemonSliceTransportClient.setup()` `DailyCallbacks` construction, fixing a `ValidationError` at pipeline setup time.