diff --git a/examples/foundational/07ae-interruptible-hume.py b/examples/foundational/07ae-interruptible-hume.py
index 17a29f0db..e30cfff98 100644
--- a/examples/foundational/07ae-interruptible-hume.py
+++ b/examples/foundational/07ae-interruptible-hume.py
@@ -13,7 +13,7 @@ from pipecat.audio.turn.smart_turn.base_smart_turn import SmartTurnParams
 from pipecat.audio.turn.smart_turn.local_smart_turn_v3 import LocalSmartTurnAnalyzerV3
 from pipecat.audio.vad.silero import SileroVADAnalyzer
 from pipecat.audio.vad.vad_analyzer import VADParams
-from pipecat.frames.frames import Frame, LLMRunFrame, TTSTextFrame
+from pipecat.frames.frames import Frame, LLMRunFrame, TTSTextFrame, format_pts
 from pipecat.pipeline.pipeline import Pipeline
 from pipecat.pipeline.runner import PipelineRunner
 from pipecat.pipeline.task import PipelineParams, PipelineTask
@@ -32,7 +32,6 @@ from pipecat.services.openai.llm import OpenAILLMService
 from pipecat.transports.base_transport import BaseTransport, TransportParams
 from pipecat.transports.daily.transport import DailyParams
 from pipecat.transports.websocket.fastapi import FastAPIWebsocketParams
-from pipecat.frames.frames import format_pts
 
 load_dotenv(override=True)
 
@@ -156,9 +155,7 @@ async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
             "💡 Word timestamps are enabled! Watch for '🎯 Word timestamp' logs showing each word with its PTS."
         )
         # Kick off the conversation.
-        messages.append(
-            {"role": "system", "content": "Please introduce yourself to the user."}
-        )
+        messages.append({"role": "system", "content": "Please introduce yourself to the user."})
         await task.queue_frames([LLMRunFrame()])
 
     @transport.event_handler("on_client_disconnected")
diff --git a/src/pipecat/services/hume/tts.py b/src/pipecat/services/hume/tts.py
index 0ee6e2adf..c3ef18ddf 100644
--- a/src/pipecat/services/hume/tts.py
+++ b/src/pipecat/services/hume/tts.py
@@ -86,9 +86,7 @@ class HumeTTSService(WordTTSService):
         """
         api_key = api_key or os.getenv("HUME_API_KEY")
         if not api_key:
-            raise ValueError(
-                "HumeTTSService requires an API key (env HUME_API_KEY or api_key=)"
-            )
+            raise ValueError("HumeTTSService requires an API key (env HUME_API_KEY or api_key=)")
 
         if sample_rate != HUME_SAMPLE_RATE:
             logger.warning(
@@ -227,9 +225,7 @@ class HumeTTSService(WordTTSService):
                             begin_ms = getattr(time_obj, "begin", None)
                             if begin_ms is not None:
                                 begin_seconds = begin_ms / 1000.0
-                                await self.add_word_timestamps(
-                                    [(word_text, begin_seconds)]
-                                )
+                                await self.add_word_timestamps([(word_text, begin_seconds)])
                     continue
 
                 # Process audio chunk