diff --git a/typescript/package-lock.json b/typescript/package-lock.json
index 4233d18..a80175b 100644
--- a/typescript/package-lock.json
+++ b/typescript/package-lock.json
@@ -9,7 +9,7 @@
       "version": "0.4.0",
       "license": "MIT",
       "dependencies": {
-        "@jambonz/schema": "^0.3.0",
+        "@jambonz/schema": "^0.3.5",
         "ajv": "^8.17.1",
         "ws": "^8.18.0"
       },
@@ -582,9 +582,9 @@
       }
     },
     "node_modules/@jambonz/schema": {
-      "version": "0.3.0",
-      "resolved": "https://registry.npmjs.org/@jambonz/schema/-/schema-0.3.0.tgz",
-      "integrity": "sha512-JqpsOK+ELDzbadPvgqZ42bhzL4Rk6pAdxgGZs3vay0oTJj0hYhpjXp6Yo2DzbBQz31Br8q2Vv4OzVZZYTmEQMg==",
+      "version": "0.3.5",
+      "resolved": "https://registry.npmjs.org/@jambonz/schema/-/schema-0.3.5.tgz",
+      "integrity": "sha512-xHK0NcQWEtm+UmCdy87uegTHx6siCULgrGh8K+7SC0vl2Nrf5+tLcYLXpkp/5MMA1LlT2V8/ZuN/Fim139dMnQ==",
       "license": "MIT",
       "dependencies": {
         "ajv": "^8.17.1",
diff --git a/typescript/package.json b/typescript/package.json
index ceec509..cbcd0c5 100644
--- a/typescript/package.json
+++ b/typescript/package.json
@@ -95,7 +95,7 @@
     "postpublish": "npm run clean-docs"
   },
   "dependencies": {
-    "@jambonz/schema": "^0.3.0",
+    "@jambonz/schema": "^0.3.5",
     "ajv": "^8.17.1",
     "ws": "^8.18.0"
   },
diff --git a/typescript/src/types/verbs.ts b/typescript/src/types/verbs.ts
index 8179337..cded898 100644
--- a/typescript/src/types/verbs.ts
+++ b/typescript/src/types/verbs.ts
@@ -326,6 +326,10 @@ export interface AgentVerb {
   mcpServers?: McpServerConfig[];
   /** Seconds to wait after assistant finishes speaking before prompting user to respond. 0 disables. Default: 0. */
   noResponseTimeout?: number;
+  /** Auto-adjust STT/TTS based on detected language. true=lock on first, 'always'=adapt every turn. */
+  autoLockLanguage?: boolean | 'always';
+  /** Per-language TTS overrides. Keys are BCP-47 codes (e.g., 'es', 'fr'). */
+  languageConfig?: Record<string, { tts?: Synthesizer }>;
 }
 
 export interface ListenVerb {
diff --git a/typescript/src/websocket/session.ts b/typescript/src/websocket/session.ts
index 88ed915..532af77 100644
--- a/typescript/src/websocket/session.ts
+++ b/typescript/src/websocket/session.ts
@@ -360,6 +360,19 @@ export class Session extends EventEmitter {
     });
   }
 
+  /**
+   * Reconfigure STT (speech-to-text) settings mid-call.
+   * Currently supports updating language hints for Deepgram Flux Multilingual.
+   *
+   * @param opts - STT reconfiguration options
+   * @param opts.languageHints - Array of BCP-47 language codes (e.g., ['en', 'es']).
+   *                             Pass empty array [] to clear hints and enable auto-detection.
+   * @param callSid - Optional call SID for targeting specific leg
+   */
+  injectSttReconfigure(opts: { languageHints?: string[] }, callSid?: string): void {
+    this.injectCommand('stt:reconfigure', opts, callSid);
+  }
+
   // ---------------------------------------------------------------------------
   // TTS Token Streaming
   // ---------------------------------------------------------------------------