diff --git a/property.json b/property.json
index 9e26dfe..778ab68 100644
--- a/property.json
+++ b/property.json
@@ -1 +1,5 @@
-{}
\ No newline at end of file
+{
+    "azure_subscription_key": "${env:AZURE_TTS_KEY}",
+    "azure_subscription_region": "${env:AZURE_TTS_REGION}",
+    "azure_synthesis_voice_name": "en-US-AndrewMultilingualNeural"
+}
\ No newline at end of file