diff --git a/homeassistant/components/watson_tts/tts.py b/homeassistant/components/watson_tts/tts.py
index ad989ec39fc..62ddc917ce9 100644
--- a/homeassistant/components/watson_tts/tts.py
+++ b/homeassistant/components/watson_tts/tts.py
@@ -1,4 +1,6 @@
 """Support for IBM Watson TTS integration."""
+import logging
+
 from ibm_cloud_sdk_core.authenticators import IAMAuthenticator
 from ibm_watson import TextToSpeechV1
 import voluptuous as vol
@@ -6,6 +8,8 @@ import voluptuous as vol
 from homeassistant.components.tts import PLATFORM_SCHEMA, Provider
 import homeassistant.helpers.config_validation as cv
 
+_LOGGER = logging.getLogger(__name__)
+
 CONF_URL = "watson_url"
 CONF_APIKEY = "watson_apikey"
 
@@ -18,22 +22,32 @@ CONF_TEXT_TYPE = "text"
 # List from https://tinyurl.com/watson-tts-docs
 SUPPORTED_VOICES = [
     "ar-AR_OmarVoice",
+    "ar-MS_OmarVoice",
+    "de-DE_BirgitV2Voice",
     "de-DE_BirgitV3Voice",
     "de-DE_BirgitVoice",
+    "de-DE_DieterV2Voice",
     "de-DE_DieterV3Voice",
     "de-DE_DieterVoice",
     "de-DE_ErikaV3Voice",
+    "en-AU_CraigVoice",
+    "en-AU_MadisonVoice",
     "en-GB_KateV3Voice",
     "en-GB_KateVoice",
     "en-GB_CharlotteV3Voice",
     "en-GB_JamesV3Voice",
+    "en-GB_KateV3Voice",
+    "en-GB_KateVoice",
+    "en-US_AllisonV2Voice",
     "en-US_AllisonV3Voice",
     "en-US_AllisonVoice",
     "en-US_EmilyV3Voice",
     "en-US_HenryV3Voice",
     "en-US_KevinV3Voice",
+    "en-US_LisaV2Voice",
     "en-US_LisaV3Voice",
     "en-US_LisaVoice",
+    "en-US_MichaelV2Voice",
     "en-US_MichaelV3Voice",
     "en-US_MichaelVoice",
     "en-US_OliviaV3Voice",
@@ -45,12 +59,17 @@ SUPPORTED_VOICES = [
     "es-LA_SofiaVoice",
     "es-US_SofiaV3Voice",
     "es-US_SofiaVoice",
+    "fr-CA_LouiseV3Voice",
+    "fr-FR_NicolasV3Voice",
     "fr-FR_ReneeV3Voice",
     "fr-FR_ReneeVoice",
+    "it-IT_FrancescaV2Voice",
     "it-IT_FrancescaV3Voice",
     "it-IT_FrancescaVoice",
     "ja-JP_EmiV3Voice",
     "ja-JP_EmiVoice",
+    "ko-KR_HyunjunVoice",
+    "ko-KR_SiWooVoice",
     "ko-KR_YoungmiVoice",
     "ko-KR_YunaVoice",
     "nl-NL_EmmaVoice",
@@ -62,6 +81,25 @@ SUPPORTED_VOICES = [
     "zh-CN_ZhangJingVoice",
 ]
 
+DEPRECATED_VOICES = [
+    "ar-AR_OmarVoice",
+    "de-DE_BirgitVoice",
+    "de-DE_DieterVoice",
+    "en-GB_KateVoice",
+    "en-GB_KateV3Voice",
+    "en-US_AllisonVoice",
+    "en-US_LisaVoice",
+    "en-US_MichaelVoice",
+    "es-ES_EnriqueVoice",
+    "es-ES_LauraVoice",
+    "es-LA_SofiaVoice",
+    "es-US_SofiaVoice",
+    "fr-FR_ReneeVoice",
+    "it-IT_FrancescaVoice",
+    "ja-JP_EmiVoice",
+    "pt-BR_IsabelaVoice",
+]
+
 SUPPORTED_OUTPUT_FORMATS = [
     "audio/flac",
     "audio/mp3",
@@ -82,7 +120,7 @@ CONTENT_TYPE_EXTENSIONS = {
     "audio/wav": "wav",
 }
 
-DEFAULT_VOICE = "en-US_AllisonVoice"
+DEFAULT_VOICE = "en-US_AllisonV3Voice"
 DEFAULT_OUTPUT_FORMAT = "audio/mp3"
 
 PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
@@ -124,6 +162,12 @@ class WatsonTTSProvider(Provider):
         self.output_format = output_format
         self.name = "Watson TTS"
 
+        if self.default_voice in DEPRECATED_VOICES:
+            _LOGGER.warning(
+                "Watson TTS voice %s is deprecated, it may be removed in the future",
+                self.default_voice,
+            )
+
     @property
     def supported_languages(self):
         """Return a list of supported languages."""