diff --git a/lib/routes/api/speech-credentials.js b/lib/routes/api/speech-credentials.js
index d68cff9..6a6f3a5 100644
--- a/lib/routes/api/speech-credentials.js
+++ b/lib/routes/api/speech-credentials.js
@@ -158,6 +158,7 @@ const encryptCredential = (obj) => {
     user_id,
     voice_engine,
     engine_version,
+    service_version,
     options
   } = obj;
 
@@ -292,7 +293,7 @@ const encryptCredential = (obj) => {
 
     case 'assemblyai':
       assert(api_key, 'invalid assemblyai speech credential: api_key is required');
-      const assemblyaiData = JSON.stringify({api_key});
+      const assemblyaiData = JSON.stringify({api_key, service_version});
       return encrypt(assemblyaiData);
 
     case 'voxist':
@@ -516,6 +517,7 @@ router.put('/:sid', async(req, res) => {
           deepgram_tts_uri,
           playht_tts_uri,
           engine_version,
+          service_version,
           speechmatics_stt_uri
         } = req.body;
 
@@ -548,6 +550,7 @@ router.put('/:sid', async(req, res) => {
           deepgram_tts_uri,
           playht_tts_uri,
           engine_version,
+          service_version,
           speechmatics_stt_uri
         };
         logger.info({o, newCred}, 'updating speech credential with this new credential');
diff --git a/lib/utils/speech-utils.js b/lib/utils/speech-utils.js
index e323d6e..064de86 100644
--- a/lib/utils/speech-utils.js
+++ b/lib/utils/speech-utils.js
@@ -726,6 +726,7 @@ function decryptCredential(obj, credential, logger, isObscureKey = true) {
   } else if ('assemblyai' === obj.vendor) {
     const o = JSON.parse(decrypt(credential));
     obj.api_key = isObscureKey ? obscureKey(o.api_key) : o.api_key;
+    obj.service_version = o.service_version;
   } else if ('voxist' === obj.vendor) {
     const o = JSON.parse(decrypt(credential));
     obj.api_key = isObscureKey ? obscureKey(o.api_key) : o.api_key;
diff --git a/package-lock.json b/package-lock.json
index 1040f84..096df91 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -22,7 +22,7 @@
         "@jambonz/realtimedb-helpers": "^0.8.14",
         "@jambonz/speech-utils": "^0.2.13",
         "@jambonz/time-series": "^0.2.8",
-        "@jambonz/verb-specifications": "^0.0.104",
+        "@jambonz/verb-specifications": "^0.0.106",
         "@soniox/soniox-node": "^1.2.2",
         "ajv": "^8.17.1",
         "argon2": "^0.40.1",
@@ -4270,9 +4270,9 @@
       }
     },
     "node_modules/@jambonz/verb-specifications": {
-      "version": "0.0.104",
-      "resolved": "https://registry.npmjs.org/@jambonz/verb-specifications/-/verb-specifications-0.0.104.tgz",
-      "integrity": "sha512-G1LjK6ISujdg0zALudtUvdaPXmvA4FU6x3s8S9MwUbWbFo2WERMUcNOgQAutDZwOMrLH9DnbPL8ZIdnTCKnlkA==",
+      "version": "0.0.106",
+      "resolved": "https://registry.npmjs.org/@jambonz/verb-specifications/-/verb-specifications-0.0.106.tgz",
+      "integrity": "sha512-xBCGKKW5QC7ItZyeF22esytpG2yIhkGWIvBgTaf97CilQmUdLGo3rWG3i7qnRvU9MPXFCtVCMt/aaMt1Ep6V2g==",
       "license": "MIT",
       "dependencies": {
         "debug": "^4.3.4",
diff --git a/package.json b/package.json
index d7ca285..3268728 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "@jambonz/realtimedb-helpers": "^0.8.14",
     "@jambonz/speech-utils": "^0.2.13",
     "@jambonz/time-series": "^0.2.8",
-    "@jambonz/verb-specifications": "^0.0.104",
+    "@jambonz/verb-specifications": "^0.0.106",
     "@soniox/soniox-node": "^1.2.2",
     "ajv": "^8.17.1",
     "argon2": "^0.40.1",
diff --git a/test/speech-credentials.js b/test/speech-credentials.js
index cf06da0..653f1c7 100644
--- a/test/speech-credentials.js
+++ b/test/speech-credentials.js
@@ -791,7 +791,8 @@ test('speech credentials tests', async(t) => {
       body: {
         vendor: 'assemblyai',
         use_for_stt: true,
-        api_key: "APIKEY"
+        api_key: "APIKEY",
+        service_version: 'v2'
       }
     });
     t.ok(result.statusCode === 201, 'successfully added speech credential for assemblyai');