diff --git a/openapi.yaml b/openapi.yaml
index 74a00a6..d446f7c 100644
--- a/openapi.yaml
+++ b/openapi.yaml
@@ -3863,7 +3863,7 @@ paths:
         **Connection Setup:**
         - Protocol: WebSocket (wss://)
         - Authentication: Pass API key as Bearer token in Authorization header
-        - Parameters: Sent as query parameters (model, voice, max_partial_length)
+        - Parameters: Sent as query parameters (model, voice, max_partial_length, language)
 
         **Client Events:**
         - `tts_session.updated`: Update session parameters like voice
@@ -4145,6 +4145,15 @@ paths:
             description: |
               Maximum number of characters in partial text before forcing TTS generation
               even without a sentence ending. Helps reduce latency for long text without punctuation.
+        - in: query
+          name: language
+          required: false
+          schema:
+            type: string
+            default: en
+            example: en
+            description: |
+              Language or locale of input text. Accepts ISO 639-1 language codes (e.g., `en`, `fr`, `es`, `zh`) as well as locale codes for region-specific variants. Locale codes must be lowercase (e.g., `zh-hk` for Cantonese). Can also be set via `tts_session.updated` event.
       responses:
         '101':
           description: |
@@ -10089,7 +10098,7 @@ components:
         language:
           type: string
           description: |
-            Language or locale of input text. Accepts ISO 639-1 language codes (e.g., `en`, `fr`, `es`, `zh`) as well as locale codes for region-specific variants. Locale codes must be lowercase (e.g., `zh-hk` for Cantonese, not `zh-HK`).
+            Language or locale of input text. Accepts ISO 639-1 language codes (e.g., `en`, `fr`, `es`, `zh`) as well as locale codes for region-specific variants. Locale codes must be lowercase (e.g., `zh-hk` for Cantonese).
           default: en
           example: en
         response_encoding: