diff --git a/requirements.txt b/requirements.txt
index b75bb0f..2555826 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,6 +26,8 @@ vosk>=0.3.45
 # pocketsphinx>=5.0.0
 
 # Hotword Detection (optional - requires Picovoice API key)
+# Get your API key at: https://console.picovoice.ai/
+# Then run: export PICOVOICE_API_KEY="your_key" && pip install pvporcupine
 # porcupine>=2.2.0
 
 # Configuration