diff --git a/src/pipecat/services/azure/stt.py b/src/pipecat/services/azure/stt.py
index 779a6d8c7..058db7990 100644
--- a/src/pipecat/services/azure/stt.py
+++ b/src/pipecat/services/azure/stt.py
@@ -21,6 +21,7 @@ from pipecat.frames.frames import (
     Frame,
     StartFrame,
     TranscriptionFrame,
+    InterimTranscriptionFrame,
 )
 from pipecat.services.azure.common import language_to_azure_language
 from pipecat.services.stt_service import STTService