diff --git a/pyproject.toml b/pyproject.toml
index 87a34f929..4e300bd91 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -42,7 +42,7 @@ Website = "https://pipecat.ai"
 anthropic = [ "anthropic~=0.49.0" ]
 assemblyai = [ "assemblyai~=0.37.0" ]
 aws = [ "boto3~=1.37.16" ]
-azure = [ "azure-cognitiveservices-speech~=1.43.0"]
+azure = [ "azure-cognitiveservices-speech~=1.42.0"]
 canonical = [ "aiofiles~=24.1.0" ]
 cartesia = [ "cartesia~=1.4.0", "websockets~=13.1" ]
 neuphonic = [ "pyneuphonic~=1.5.13", "websockets~=13.1" ]