diff --git a/speech_to_text/CHANGELOG.md b/speech_to_text/CHANGELOG.md
index ffb0a56..de608c1 100644
--- a/speech_to_text/CHANGELOG.md
+++ b/speech_to_text/CHANGELOG.md
@@ -7,6 +7,7 @@
 
 ### Fix
 * Remove support for deprecated v1 Android registration [#545](https://github.com/csdcorp/speech_to_text/issues/545)
+* Update deprecated Android build settings
 
 ## 6.6.2
 
diff --git a/speech_to_text/README.md b/speech_to_text/README.md
index 84d32ca..aa41490 100644
--- a/speech_to_text/README.md
+++ b/speech_to_text/README.md
@@ -314,6 +314,9 @@ Accessibility -> Spoken content -> Voices
 From there select any language and any speaker and it should download to the device. After that speech
 recognition should work on the simulator.
 
+_Using a Bluetooth headset with your Mac may cause an issue with the simulator speech recognition, 
+see: https://github.com/csdcorp/speech_to_text/issues/539 for details._
+
 ### Speech recognition stops after a brief pause on Android
 
 Android speech recognition has a very short timeout when the speaker pauses. The duration seems to vary by device