diff --git a/homeassistant/components/google_cloud/tts.py b/homeassistant/components/google_cloud/tts.py
index 6ffa3a9acd1..b0ae28bf5b1 100644
--- a/homeassistant/components/google_cloud/tts.py
+++ b/homeassistant/components/google_cloud/tts.py
@@ -55,6 +55,7 @@ SUPPORTED_LANGUAGES = [
     "pl-PL",
     "pt-BR",
     "pt-PT",
+    "ro-RO",
     "ru-RU",
     "sk-SK",
     "sv-SE",