diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 08e4428..01ff4cc 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -13,6 +13,8 @@ jobs:
       BW_ACCOUNT_ID: ${{ secrets.BW_ACCOUNT_ID }}
       BW_USERNAME: ${{ secrets.BW_USERNAME }}
       BW_PASSWORD: ${{ secrets.BW_PASSWORD }}
+      BW_CLIENT_ID: ${{ secrets.BW_CLIENT_ID }}
+      BW_CLIENT_SECRET: ${{ secrets.BW_CLIENT_SECRET }}
       BW_USERNAME_FORBIDDEN: ${{ secrets.BW_USERNAME_FORBIDDEN }}
       BW_PASSWORD_FORBIDDEN: ${{ secrets.BW_PASSWORD_FORBIDDEN }}
       BW_VOICE_APPLICATION_ID: ${{ secrets.BW_VOICE_APPLICATION_ID }}
@@ -46,7 +48,7 @@ jobs:
       - name: Setup Node
         uses: actions/setup-node@v6
         with:
-          node-version: 22
+          node-version: 24
           registry-url: "https://registry.npmjs.org"
 
       - name: Set OpenAPI Generator Version
diff --git a/.github/workflows/test-pr.yml b/.github/workflows/test-pr.yml
index 3318829..4af736c 100644
--- a/.github/workflows/test-pr.yml
+++ b/.github/workflows/test-pr.yml
@@ -13,6 +13,8 @@ env:
   BW_ACCOUNT_ID: ${{ secrets.BW_ACCOUNT_ID }}
   BW_USERNAME: ${{ secrets.BW_USERNAME }}
   BW_PASSWORD: ${{ secrets.BW_PASSWORD }}
+  BW_CLIENT_ID: ${{ secrets.BW_CLIENT_ID }}
+  BW_CLIENT_SECRET: ${{ secrets.BW_CLIENT_SECRET }}
   BW_USERNAME_FORBIDDEN: ${{ secrets.BW_USERNAME_FORBIDDEN }}
   BW_PASSWORD_FORBIDDEN: ${{ secrets.BW_PASSWORD_FORBIDDEN }}
   BW_VOICE_APPLICATION_ID: ${{ secrets.BW_VOICE_APPLICATION_ID }}
@@ -32,7 +34,7 @@ jobs:
     strategy:
       matrix:
         os: [windows-2022, windows-2025, ubuntu-22.04, ubuntu-24.04]
-        node-version: [18, 20, 22, 24]
+        node-version: [20, 22, 24]
       fail-fast: false
     steps:
       - name: Checkout
diff --git a/.github/workflows/test-smoke.yml b/.github/workflows/test-smoke.yml
index d09ff6a..248247c 100644
--- a/.github/workflows/test-smoke.yml
+++ b/.github/workflows/test-smoke.yml
@@ -15,6 +15,8 @@ concurrency:
 env:
   BW_USERNAME: ${{ secrets.BW_USERNAME }}
   BW_PASSWORD: ${{ secrets.BW_PASSWORD }}
+  BW_CLIENT_ID: ${{ secrets.BW_CLIENT_ID }}
+  BW_CLIENT_SECRET: ${{ secrets.BW_CLIENT_SECRET }}
   BW_USERNAME_FORBIDDEN: ${{ secrets.BW_USERNAME_FORBIDDEN }}
   BW_PASSWORD_FORBIDDEN: ${{ secrets.BW_PASSWORD_FORBIDDEN }}
   USER_NUMBER: ${{ secrets.USER_NUMBER }}
@@ -40,7 +42,7 @@ jobs:
       - name: Setup Node
         uses: actions/setup-node@v6
         with:
-          node-version: 22
+          node-version: 24
 
       - name: Install Packages and Test
         run: |
@@ -67,7 +69,7 @@ jobs:
       - name: Setup Node
         uses: actions/setup-node@v6
         with:
-          node-version: 22
+          node-version: 24
 
       - name: Install Packages and Test
         run: |
diff --git a/README.md b/README.md
index 239dfbe..578938a 100644
--- a/README.md
+++ b/README.md
@@ -84,8 +84,8 @@ The following is a simple example of how to use this module:
 import { CallsApi, Configuration } from 'bandwidth-sdk';
 
 const config = new Configuration({
-    username: BW_USERNAME,
-    password: BW_PASSWORD
+    clientId: BW_CLIENT_ID,
+    clientSecret: BW_CLIENT_SECRET
 });
 const callsApi = new CallsApi(config);
 
@@ -346,3 +346,11 @@ Authentication schemes defined for the API:
 
 - **Type**: HTTP basic authentication
 
+<a id="OAuth2"></a>
+### OAuth2
+
+- **Type**: OAuth
+- **Flow**: application
+- **Authorization URL**: 
+- **Scopes**: N/A
+
diff --git a/api/calls-api.ts b/api/calls-api.ts
index 2d30644..1a62df5 100644
--- a/api/calls-api.ts
+++ b/api/calls-api.ts
@@ -66,6 +66,10 @@ export const CallsApiAxiosParamCreator = function (configuration?: Configuration
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/json';
@@ -111,6 +115,10 @@ export const CallsApiAxiosParamCreator = function (configuration?: Configuration
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -156,6 +164,10 @@ export const CallsApiAxiosParamCreator = function (configuration?: Configuration
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
             if (to !== undefined) {
                 localVarQueryParameter['to'] = to;
             }
@@ -229,6 +241,10 @@ export const CallsApiAxiosParamCreator = function (configuration?: Configuration
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/json';
@@ -277,6 +293,10 @@ export const CallsApiAxiosParamCreator = function (configuration?: Configuration
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/xml';
diff --git a/api/conferences-api.ts b/api/conferences-api.ts
index 7bceb85..54628cc 100644
--- a/api/conferences-api.ts
+++ b/api/conferences-api.ts
@@ -73,6 +73,10 @@ export const ConferencesApiAxiosParamCreator = function (configuration?: Configu
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -115,6 +119,10 @@ export const ConferencesApiAxiosParamCreator = function (configuration?: Configu
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -161,6 +169,10 @@ export const ConferencesApiAxiosParamCreator = function (configuration?: Configu
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -207,6 +219,10 @@ export const ConferencesApiAxiosParamCreator = function (configuration?: Configu
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -249,6 +265,10 @@ export const ConferencesApiAxiosParamCreator = function (configuration?: Configu
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -292,6 +312,10 @@ export const ConferencesApiAxiosParamCreator = function (configuration?: Configu
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
             if (name !== undefined) {
                 localVarQueryParameter['name'] = name;
             }
@@ -357,6 +381,10 @@ export const ConferencesApiAxiosParamCreator = function (configuration?: Configu
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/json';
@@ -405,6 +433,10 @@ export const ConferencesApiAxiosParamCreator = function (configuration?: Configu
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/xml';
@@ -457,6 +489,10 @@ export const ConferencesApiAxiosParamCreator = function (configuration?: Configu
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/json';
diff --git a/api/media-api.ts b/api/media-api.ts
index be90feb..33cfe6c 100644
--- a/api/media-api.ts
+++ b/api/media-api.ts
@@ -61,6 +61,10 @@ export const MediaApiAxiosParamCreator = function (configuration?: Configuration
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -103,6 +107,10 @@ export const MediaApiAxiosParamCreator = function (configuration?: Configuration
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -142,6 +150,10 @@ export const MediaApiAxiosParamCreator = function (configuration?: Configuration
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             if (continuationToken != null) {
@@ -192,6 +204,10 @@ export const MediaApiAxiosParamCreator = function (configuration?: Configuration
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/json';
diff --git a/api/messages-api.ts b/api/messages-api.ts
index df5e412..2b00916 100644
--- a/api/messages-api.ts
+++ b/api/messages-api.ts
@@ -74,6 +74,10 @@ export const MessagesApiAxiosParamCreator = function (configuration?: Configurat
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/json';
@@ -142,6 +146,10 @@ export const MessagesApiAxiosParamCreator = function (configuration?: Configurat
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
             if (messageId !== undefined) {
                 localVarQueryParameter['messageId'] = messageId;
             }
diff --git a/api/mfaapi.ts b/api/mfaapi.ts
index dafb8ec..22c2a75 100644
--- a/api/mfaapi.ts
+++ b/api/mfaapi.ts
@@ -72,6 +72,10 @@ export const MFAApiAxiosParamCreator = function (configuration?: Configuration)
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/json';
@@ -116,6 +120,10 @@ export const MFAApiAxiosParamCreator = function (configuration?: Configuration)
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/json';
@@ -160,6 +168,10 @@ export const MFAApiAxiosParamCreator = function (configuration?: Configuration)
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/json';
diff --git a/api/multi-channel-api.ts b/api/multi-channel-api.ts
index ccfab14..d749461 100644
--- a/api/multi-channel-api.ts
+++ b/api/multi-channel-api.ts
@@ -62,6 +62,10 @@ export const MultiChannelApiAxiosParamCreator = function (configuration?: Config
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/json';
diff --git a/api/phone-number-lookup-api.ts b/api/phone-number-lookup-api.ts
index 8a16272..1876d0c 100644
--- a/api/phone-number-lookup-api.ts
+++ b/api/phone-number-lookup-api.ts
@@ -68,6 +68,10 @@ export const PhoneNumberLookupApiAxiosParamCreator = function (configuration?: C
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/json';
@@ -112,6 +116,10 @@ export const PhoneNumberLookupApiAxiosParamCreator = function (configuration?: C
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/json';
@@ -157,6 +165,10 @@ export const PhoneNumberLookupApiAxiosParamCreator = function (configuration?: C
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
diff --git a/api/recordings-api.ts b/api/recordings-api.ts
index 1fcec47..fd45abe 100644
--- a/api/recordings-api.ts
+++ b/api/recordings-api.ts
@@ -71,6 +71,10 @@ export const RecordingsApiAxiosParamCreator = function (configuration?: Configur
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -117,6 +121,10 @@ export const RecordingsApiAxiosParamCreator = function (configuration?: Configur
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -163,6 +171,10 @@ export const RecordingsApiAxiosParamCreator = function (configuration?: Configur
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -209,6 +221,10 @@ export const RecordingsApiAxiosParamCreator = function (configuration?: Configur
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -255,6 +271,10 @@ export const RecordingsApiAxiosParamCreator = function (configuration?: Configur
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -301,6 +321,10 @@ export const RecordingsApiAxiosParamCreator = function (configuration?: Configur
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -343,6 +367,10 @@ export const RecordingsApiAxiosParamCreator = function (configuration?: Configur
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
             if (to !== undefined) {
                 localVarQueryParameter['to'] = to;
             }
@@ -401,6 +429,10 @@ export const RecordingsApiAxiosParamCreator = function (configuration?: Configur
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -450,6 +482,10 @@ export const RecordingsApiAxiosParamCreator = function (configuration?: Configur
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/json';
@@ -498,6 +534,10 @@ export const RecordingsApiAxiosParamCreator = function (configuration?: Configur
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/json';
diff --git a/api/statistics-api.ts b/api/statistics-api.ts
index af5250c..a1c1756 100644
--- a/api/statistics-api.ts
+++ b/api/statistics-api.ts
@@ -57,6 +57,10 @@ export const StatisticsApiAxiosParamCreator = function (configuration?: Configur
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
diff --git a/api/toll-free-verification-api.ts b/api/toll-free-verification-api.ts
index e681a87..3dd071f 100644
--- a/api/toll-free-verification-api.ts
+++ b/api/toll-free-verification-api.ts
@@ -70,6 +70,10 @@ export const TollFreeVerificationApiAxiosParamCreator = function (configuration?
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/json';
@@ -115,6 +119,10 @@ export const TollFreeVerificationApiAxiosParamCreator = function (configuration?
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -157,6 +165,10 @@ export const TollFreeVerificationApiAxiosParamCreator = function (configuration?
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -199,6 +211,10 @@ export const TollFreeVerificationApiAxiosParamCreator = function (configuration?
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -233,6 +249,10 @@ export const TollFreeVerificationApiAxiosParamCreator = function (configuration?
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -271,6 +291,10 @@ export const TollFreeVerificationApiAxiosParamCreator = function (configuration?
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -312,6 +336,10 @@ export const TollFreeVerificationApiAxiosParamCreator = function (configuration?
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/json';
@@ -360,6 +388,10 @@ export const TollFreeVerificationApiAxiosParamCreator = function (configuration?
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/json';
@@ -408,6 +440,10 @@ export const TollFreeVerificationApiAxiosParamCreator = function (configuration?
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             localVarHeaderParameter['Content-Type'] = 'application/json';
diff --git a/api/transcriptions-api.ts b/api/transcriptions-api.ts
index adf0251..e14c0bb 100644
--- a/api/transcriptions-api.ts
+++ b/api/transcriptions-api.ts
@@ -67,6 +67,10 @@ export const TranscriptionsApiAxiosParamCreator = function (configuration?: Conf
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -113,6 +117,10 @@ export const TranscriptionsApiAxiosParamCreator = function (configuration?: Conf
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
@@ -155,6 +163,10 @@ export const TranscriptionsApiAxiosParamCreator = function (configuration?: Conf
             // http basic authentication required
             setBasicAuthToObject(localVarRequestOptions, configuration)
 
+            // authentication OAuth2 required
+            // oauth required
+            await setOAuthToObject(localVarHeaderParameter, "OAuth2", [], configuration)
+
 
     
             setSearchParams(localVarUrlObj, localVarQueryParameter);
diff --git a/bandwidth.yml b/bandwidth.yml
index 6ee15ae..9ab77fd 100644
--- a/bandwidth.yml
+++ b/bandwidth.yml
@@ -9,6 +9,7 @@ info:
   version: 1.0.0
 security:
   - Basic: []
+  - OAuth2: []
 tags:
   - name: Messages
   - name: Media
@@ -8427,6 +8428,12 @@ components:
 
 
         - Example: `Authorization: Basic ZGVtbZpwQDU1dzByZA==`
+    OAuth2:
+      type: oauth2
+      flows:
+        clientCredentials:
+          tokenUrl: https://api.bandwidth.com/api/v1/oauth2/token
+          scopes: {}
   callbacks:
     inboundCallback:
       '{inboundCallbackUrl}':
diff --git a/common.ts b/common.ts
index 1024bac..f70fbcd 100644
--- a/common.ts
+++ b/common.ts
@@ -58,7 +58,9 @@ export const setOAuthToObject = async function (object: any, name: string, scope
         const localVarAccessTokenValue = typeof configuration.accessToken === 'function'
             ? await configuration.accessToken(name, scopes)
             : await configuration.accessToken;
-        object["Authorization"] = "Bearer " + localVarAccessTokenValue;
+        if (localVarAccessTokenValue) {
+            object["Authorization"] = "Bearer " + localVarAccessTokenValue;
+        }
     }
 }
 
diff --git a/configuration.ts b/configuration.ts
index 25df277..5dc9caa 100644
--- a/configuration.ts
+++ b/configuration.ts
@@ -11,6 +11,8 @@
  * Do not edit the class manually.
  */
 
+import globalAxios from 'axios';
+
 interface AWSv4Configuration {
   options?: {
     region?: string
@@ -27,6 +29,8 @@ export interface ConfigurationParameters {
     apiKey?: string | Promise<string> | ((name: string) => string) | ((name: string) => Promise<string>);
     username?: string;
     password?: string;
+    clientId?: string;
+    clientSecret?: string;
     accessToken?: string | Promise<string> | ((name?: string, scopes?: string[]) => string) | ((name?: string, scopes?: string[]) => Promise<string>);
     awsv4?: AWSv4Configuration;
     basePath?: string;
@@ -49,12 +53,28 @@ export class Configuration {
      * parameter for basic security
      */
     password?: string;
+    /**
+     * parameter for client ID
+     */
+    clientId?: string;
+    /**
+     * parameter for client secret
+     */
+    clientSecret?: string;
     /**
      * parameter for oauth2 security
      * @param name security name
      * @param scopes oauth2 scope
      */
     accessToken?: string | Promise<string> | ((name?: string, scopes?: string[]) => string) | ((name?: string, scopes?: string[]) => Promise<string>);
+    /**
+     * temporary access token storage
+     */
+    tempAccessToken?: string;
+    /**
+     * when the temporary access token expires
+     */
+    tempAccessTokenExpiration?: number;
     /**
      * parameter for aws4 signature security
      * @param {Object} AWS4Signature - AWS4 Signature security
@@ -91,7 +111,29 @@ export class Configuration {
         this.apiKey = param.apiKey;
         this.username = param.username;
         this.password = param.password;
-        this.accessToken = param.accessToken;
+        this.clientId = param.clientId;
+        this.clientSecret = param.clientSecret;
+        this.tempAccessToken;
+        this.tempAccessTokenExpiration;
+        this.accessToken = param.accessToken ?? (async (name, scopes) => {
+            const now = Math.floor(Date.now() / 1000);
+            if (this.tempAccessToken && (!this.tempAccessTokenExpiration || this.tempAccessTokenExpiration > now + 60)) {
+                return this.tempAccessToken;
+            } else if (this.clientId && this.clientSecret) {
+                const tokenRequestArgs = {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
+                    auth: { username: this.clientId || '', password: this.clientSecret || '' },
+                    data: 'grant_type=client_credentials',
+                    url: 'https://api.bandwidth.com/api/v1/oauth2/token'
+                };
+                const response = await globalAxios.request(tokenRequestArgs);
+                this.tempAccessToken = response.data.access_token;
+                this.tempAccessTokenExpiration = now + response.data.expires_in;
+                return this.tempAccessToken!;
+            }
+            return undefined;
+        });
         this.awsv4 = param.awsv4;
         this.basePath = param.basePath;
         this.serverIndex = param.serverIndex;
diff --git a/custom_templates/README.mustache b/custom_templates/README.mustache
index 95dd080..0fa14b9 100644
--- a/custom_templates/README.mustache
+++ b/custom_templates/README.mustache
@@ -84,8 +84,8 @@ The following is a simple example of how to use this module:
 import { CallsApi, Configuration } from '{{npmName}}';
 
 const config = new Configuration({
-    username: BW_USERNAME,
-    password: BW_PASSWORD
+    clientId: BW_CLIENT_ID,
+    clientSecret: BW_CLIENT_SECRET
 });
 const callsApi = new CallsApi(config);
 
diff --git a/custom_templates/common.mustache b/custom_templates/common.mustache
index 61054cc..7fde0ae 100644
--- a/custom_templates/common.mustache
+++ b/custom_templates/common.mustache
@@ -54,7 +54,9 @@ export const setOAuthToObject = async function (object: any, name: string, scope
         const localVarAccessTokenValue = typeof configuration.accessToken === 'function'
             ? await configuration.accessToken(name, scopes)
             : await configuration.accessToken;
-        object["Authorization"] = "Bearer " + localVarAccessTokenValue;
+        if (localVarAccessTokenValue) {
+            object["Authorization"] = "Bearer " + localVarAccessTokenValue;
+        }
     }
 }
 
diff --git a/custom_templates/configuration.mustache b/custom_templates/configuration.mustache
index 1f64ab5..0a89e94 100644
--- a/custom_templates/configuration.mustache
+++ b/custom_templates/configuration.mustache
@@ -1,6 +1,8 @@
 /* tslint:disable */
 {{>licenseInfo}}
 
+import globalAxios from 'axios';
+
 interface AWSv4Configuration {
   options?: {
     region?: string
@@ -17,6 +19,8 @@ export interface ConfigurationParameters {
     apiKey?: string | Promise<string> | ((name: string) => string) | ((name: string) => Promise<string>);
     username?: string;
     password?: string;
+    clientId?: string;
+    clientSecret?: string;
     accessToken?: string | Promise<string> | ((name?: string, scopes?: string[]) => string) | ((name?: string, scopes?: string[]) => Promise<string>);
     awsv4?: AWSv4Configuration;
     basePath?: string;
@@ -39,12 +43,28 @@ export class Configuration {
      * parameter for basic security
      */
     password?: string;
+    /**
+     * parameter for client ID
+     */
+    clientId?: string;
+    /**
+     * parameter for client secret
+     */
+    clientSecret?: string;
     /**
      * parameter for oauth2 security
      * @param name security name
      * @param scopes oauth2 scope
      */
     accessToken?: string | Promise<string> | ((name?: string, scopes?: string[]) => string) | ((name?: string, scopes?: string[]) => Promise<string>);
+    /**
+     * temporary access token storage
+     */
+    tempAccessToken?: string;
+    /**
+     * when the temporary access token expires
+     */
+    tempAccessTokenExpiration?: number;
     /**
      * parameter for aws4 signature security
      * @param {Object} AWS4Signature - AWS4 Signature security
@@ -81,7 +101,29 @@ export class Configuration {
         this.apiKey = param.apiKey;
         this.username = param.username;
         this.password = param.password;
-        this.accessToken = param.accessToken;
+        this.clientId = param.clientId;
+        this.clientSecret = param.clientSecret;
+        this.tempAccessToken;
+        this.tempAccessTokenExpiration;
+        this.accessToken = param.accessToken ?? (async (name, scopes) => {
+            const now = Math.floor(Date.now() / 1000);
+            if (this.tempAccessToken && (!this.tempAccessTokenExpiration || this.tempAccessTokenExpiration > now + 60)) {
+                return this.tempAccessToken;
+            } else if (this.clientId && this.clientSecret) {
+                const tokenRequestArgs = {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
+                    auth: { username: this.clientId || '', password: this.clientSecret || '' },
+                    data: 'grant_type=client_credentials',
+                    url: 'https://api.bandwidth.com/api/v1/oauth2/token'
+                };
+                const response = await globalAxios.request(tokenRequestArgs);
+                this.tempAccessToken = response.data.access_token;
+                this.tempAccessTokenExpiration = now + response.data.expires_in;
+                return this.tempAccessToken!;
+            }
+            return undefined;
+        });
         this.awsv4 = param.awsv4;
         this.basePath = param.basePath;
         this.serverIndex = param.serverIndex;
diff --git a/custom_templates/package.mustache b/custom_templates/package.mustache
index f1a6d1e..c4094d4 100644
--- a/custom_templates/package.mustache
+++ b/custom_templates/package.mustache
@@ -28,9 +28,12 @@
     "test-smoke": "jest --coverage --detectOpenHandles --testPathPattern=tests/smoke",
     "test": "jest --coverage --detectOpenHandles"
   },
+  "engines": {
+    "node": ">=20.0.0"
+  },
   "dependencies": {
     "axios": "^1.7.2",
-    "xmlbuilder2": "^3.1.1"
+    "xmlbuilder2": "^4.0.0"
   },
   "devDependencies": {
     "@types/jest": "^29.5.12",
@@ -38,7 +41,7 @@
     "jest": "^29.7.0",
     "jest-extended": "^4.0.2",
     "ts-jest": "^29.1.1",
-    "typescript": "^5.0"
+    "typescript": "^5.9.0"
   }{{#npmRepository}},{{/npmRepository}}
 {{#npmRepository}}
   "publishConfig": {
diff --git a/docs/CallsApi.md b/docs/CallsApi.md
index 2763650..1c859b0 100644
--- a/docs/CallsApi.md
+++ b/docs/CallsApi.md
@@ -50,7 +50,7 @@ const { status, data } = await apiInstance.createCall(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -112,7 +112,7 @@ const { status, data } = await apiInstance.getCallState(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -192,7 +192,7 @@ const { status, data } = await apiInstance.listCalls(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -258,7 +258,7 @@ void (empty response body)
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -324,7 +324,7 @@ void (empty response body)
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
diff --git a/docs/ConferencesApi.md b/docs/ConferencesApi.md
index 0e651cc..9a16fda 100644
--- a/docs/ConferencesApi.md
+++ b/docs/ConferencesApi.md
@@ -56,7 +56,7 @@ const { status, data } = await apiInstance.downloadConferenceRecording(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -118,7 +118,7 @@ const { status, data } = await apiInstance.getConference(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -183,7 +183,7 @@ const { status, data } = await apiInstance.getConferenceMember(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -248,7 +248,7 @@ const { status, data } = await apiInstance.getConferenceRecording(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -310,7 +310,7 @@ const { status, data } = await apiInstance.listConferenceRecordings(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -384,7 +384,7 @@ const { status, data } = await apiInstance.listConferences(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -450,7 +450,7 @@ void (empty response body)
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -515,7 +515,7 @@ void (empty response body)
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -584,7 +584,7 @@ void (empty response body)
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
diff --git a/docs/MFAApi.md b/docs/MFAApi.md
index 4b58380..97e0004 100644
--- a/docs/MFAApi.md
+++ b/docs/MFAApi.md
@@ -48,7 +48,7 @@ const { status, data } = await apiInstance.generateMessagingCode(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -107,7 +107,7 @@ const { status, data } = await apiInstance.generateVoiceCode(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -166,7 +166,7 @@ const { status, data } = await apiInstance.verifyCode(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
diff --git a/docs/MediaApi.md b/docs/MediaApi.md
index c4e26c7..49f8a5b 100644
--- a/docs/MediaApi.md
+++ b/docs/MediaApi.md
@@ -48,7 +48,7 @@ void (empty response body)
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -110,7 +110,7 @@ const { status, data } = await apiInstance.getMedia(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -172,7 +172,7 @@ const { status, data } = await apiInstance.listMedia(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -243,7 +243,7 @@ void (empty response body)
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
diff --git a/docs/MessagesApi.md b/docs/MessagesApi.md
index 517a6c7..0a01251 100644
--- a/docs/MessagesApi.md
+++ b/docs/MessagesApi.md
@@ -47,7 +47,7 @@ const { status, data } = await apiInstance.createMessage(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -188,7 +188,7 @@ const { status, data } = await apiInstance.listMessages(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
diff --git a/docs/MultiChannelApi.md b/docs/MultiChannelApi.md
index 8c9fce9..38ccffd 100644
--- a/docs/MultiChannelApi.md
+++ b/docs/MultiChannelApi.md
@@ -46,7 +46,7 @@ const { status, data } = await apiInstance.createMultiChannelMessage(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
diff --git a/docs/PhoneNumberLookupApi.md b/docs/PhoneNumberLookupApi.md
index e695efe..66cfbed 100644
--- a/docs/PhoneNumberLookupApi.md
+++ b/docs/PhoneNumberLookupApi.md
@@ -48,7 +48,7 @@ const { status, data } = await apiInstance.createAsyncBulkLookup(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -104,7 +104,7 @@ const { status, data } = await apiInstance.createSyncLookup(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -159,7 +159,7 @@ const { status, data } = await apiInstance.getAsyncBulkLookup(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
diff --git a/docs/RecordingsApi.md b/docs/RecordingsApi.md
index 6a741a5..4a844ac 100644
--- a/docs/RecordingsApi.md
+++ b/docs/RecordingsApi.md
@@ -57,7 +57,7 @@ void (empty response body)
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -122,7 +122,7 @@ void (empty response body)
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -187,7 +187,7 @@ void (empty response body)
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -252,7 +252,7 @@ const { status, data } = await apiInstance.downloadCallRecording(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -317,7 +317,7 @@ const { status, data } = await apiInstance.getCallRecording(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -382,7 +382,7 @@ const { status, data } = await apiInstance.getRecordingTranscription(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -453,7 +453,7 @@ const { status, data } = await apiInstance.listAccountCallRecordings(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -515,7 +515,7 @@ const { status, data } = await apiInstance.listCallRecordings(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -584,7 +584,7 @@ void (empty response body)
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -650,7 +650,7 @@ void (empty response body)
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
diff --git a/docs/StatisticsApi.md b/docs/StatisticsApi.md
index fc9a069..52cb384 100644
--- a/docs/StatisticsApi.md
+++ b/docs/StatisticsApi.md
@@ -42,7 +42,7 @@ const { status, data } = await apiInstance.getStatistics(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
diff --git a/docs/TollFreeVerificationApi.md b/docs/TollFreeVerificationApi.md
index c4f0e6a..573946b 100644
--- a/docs/TollFreeVerificationApi.md
+++ b/docs/TollFreeVerificationApi.md
@@ -54,7 +54,7 @@ const { status, data } = await apiInstance.createWebhookSubscription(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -116,7 +116,7 @@ void (empty response body)
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -178,7 +178,7 @@ void (empty response body)
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -240,7 +240,7 @@ const { status, data } = await apiInstance.getTollFreeVerificationStatus(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -292,7 +292,7 @@ This endpoint does not have any parameters.
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -351,7 +351,7 @@ const { status, data } = await apiInstance.listWebhookSubscriptions(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -413,7 +413,7 @@ void (empty response body)
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -478,7 +478,7 @@ void (empty response body)
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -543,7 +543,7 @@ const { status, data } = await apiInstance.updateWebhookSubscription(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
diff --git a/docs/TranscriptionsApi.md b/docs/TranscriptionsApi.md
index fef6abf..2f012e5 100644
--- a/docs/TranscriptionsApi.md
+++ b/docs/TranscriptionsApi.md
@@ -50,7 +50,7 @@ void (empty response body)
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -115,7 +115,7 @@ const { status, data } = await apiInstance.getRealTimeTranscription(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
@@ -177,7 +177,7 @@ const { status, data } = await apiInstance.listRealTimeTranscriptions(
 
 ### Authorization
 
-[Basic](../README.md#Basic)
+[Basic](../README.md#Basic), [OAuth2](../README.md#OAuth2)
 
 ### HTTP request headers
 
diff --git a/jest.config.js b/jest.config.js
index 1f10414..e694c84 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -6,6 +6,8 @@ module.exports = {
     globals: {
         'BW_USERNAME': process.env.BW_USERNAME,
         'BW_PASSWORD': process.env.BW_PASSWORD,
+        'BW_CLIENT_ID': process.env.BW_CLIENT_ID,
+        'BW_CLIENT_SECRET': process.env.BW_CLIENT_SECRET,
         'BW_ACCOUNT_ID': process.env.BW_ACCOUNT_ID,
         'BW_NUMBER': process.env.BW_NUMBER,
         'USER_NUMBER': process.env.USER_NUMBER,
diff --git a/package.json b/package.json
index 10ff4cc..a55f66b 100644
--- a/package.json
+++ b/package.json
@@ -24,9 +24,12 @@
     "test-smoke": "jest --coverage --detectOpenHandles --testPathPattern=tests/smoke",
     "test": "jest --coverage --detectOpenHandles"
   },
+  "engines": {
+    "node": ">=20.0.0"
+  },
   "dependencies": {
     "axios": "^1.7.2",
-    "xmlbuilder2": "^3.1.1"
+    "xmlbuilder2": "^4.0.0"
   },
   "devDependencies": {
     "@types/jest": "^29.5.12",
@@ -34,6 +37,6 @@
     "jest": "^29.7.0",
     "jest-extended": "^4.0.2",
     "ts-jest": "^29.1.1",
-    "typescript": "^5.0"
+    "typescript": "^5.9.0"
   }
 }
diff --git a/tests/smoke/bxml.test.ts b/tests/smoke/bxml.test.ts
index e7f9e7c..feaa610 100644
--- a/tests/smoke/bxml.test.ts
+++ b/tests/smoke/bxml.test.ts
@@ -25,7 +25,10 @@ import { sleep, createMantecaCall, cleanupCalls } from '../callUtils';
 describe('BXML Integration Tests', () => {
     jest.setTimeout(20000);
     
-    const config = new Configuration({username: BW_USERNAME, password: BW_PASSWORD});
+    const config = new Configuration({
+        clientId: BW_CLIENT_ID,
+        clientSecret: BW_CLIENT_SECRET
+    });
     const callsApi = new CallsApi(config);
     let activeCalls: string[] = [];
     
diff --git a/tests/smoke/calls-api.test.ts b/tests/smoke/calls-api.test.ts
index 1461083..a2084b6 100644
--- a/tests/smoke/calls-api.test.ts
+++ b/tests/smoke/calls-api.test.ts
@@ -13,7 +13,10 @@ import { createMantecaCall, sleep, cleanupCalls } from '../callUtils';
 
 describe('CallsApi', () => {
     jest.setTimeout(45000);
-    const config = new Configuration({username: BW_USERNAME, password: BW_PASSWORD});
+    const config = new Configuration({
+        clientId: BW_CLIENT_ID,
+        clientSecret: BW_CLIENT_SECRET
+    });
     const callsApi = new CallsApi(config);
 
     const displayName = 'NodeJS SDK';
diff --git a/tests/smoke/conferences-api.test.ts b/tests/smoke/conferences-api.test.ts
index 4741025..6f85e71 100644
--- a/tests/smoke/conferences-api.test.ts
+++ b/tests/smoke/conferences-api.test.ts
@@ -6,7 +6,10 @@ import { setupManteca, createMantecaCall, cleanupCalls, getMantecaTestStatus, sl
 
 describe('ConferencesApi', () => {
     jest.setTimeout(125000);
-    const config = new Configuration({username: BW_USERNAME, password: BW_PASSWORD});
+    const config = new Configuration({
+        username: BW_USERNAME,
+        password: BW_PASSWORD
+    });
     const callsApi = new CallsApi(config);
     const conferencesApi = new ConferencesApi(config);
 
diff --git a/tests/smoke/phone-number-lookup-api.test.ts b/tests/smoke/phone-number-lookup-api.test.ts
index 9d4c8f3..f18c9dc 100644
--- a/tests/smoke/phone-number-lookup-api.test.ts
+++ b/tests/smoke/phone-number-lookup-api.test.ts
@@ -14,8 +14,8 @@ import { sleep } from '../callUtils';
 describe('PhoneNumberLookupApi', () => {
     jest.setTimeout(40000);
     const config = new Configuration({
-        username: BW_USERNAME,
-        password: BW_PASSWORD
+        clientId: BW_CLIENT_ID,
+        clientSecret: BW_CLIENT_SECRET
     });
     const phoneNumberLookupApi = new PhoneNumberLookupApi(config);
 
diff --git a/tests/smoke/recordings-api.test.ts b/tests/smoke/recordings-api.test.ts
index 93c476b..daf44d6 100644
--- a/tests/smoke/recordings-api.test.ts
+++ b/tests/smoke/recordings-api.test.ts
@@ -6,7 +6,10 @@ import { getMantecaTestStatus, setupManteca, createMantecaCall, cleanupCalls, sl
 
 describe('RecordingsApi', () => {
     jest.setTimeout(240000);
-    const config = new Configuration({username: BW_USERNAME, password: BW_PASSWORD});
+    const config = new Configuration({
+        clientId: BW_CLIENT_ID,
+        clientSecret: BW_CLIENT_SECRET
+    });
     const callsApi = new CallsApi(config);
     const recordingsApi = new RecordingsApi(config);
 
diff --git a/tests/smoke/statistics-api.test.ts b/tests/smoke/statistics-api.test.ts
index f1bb55d..3cad27c 100644
--- a/tests/smoke/statistics-api.test.ts
+++ b/tests/smoke/statistics-api.test.ts
@@ -3,7 +3,10 @@ import { StatisticsApi } from '../../api';
 import { Configuration } from '../../configuration';
 
 describe('StatisticsApi', () => {
-    const config = new Configuration({username: BW_USERNAME, password: BW_PASSWORD});
+    const config = new Configuration({
+        clientId: BW_CLIENT_ID,
+        clientSecret: BW_CLIENT_SECRET
+    });
     const statisticsApi = new StatisticsApi(config);
 
     describe('getStatistics', () => {
diff --git a/tests/smoke/toll-free-verification-api.test.ts b/tests/smoke/toll-free-verification-api.test.ts
index d2a4d91..bdd18d1 100644
--- a/tests/smoke/toll-free-verification-api.test.ts
+++ b/tests/smoke/toll-free-verification-api.test.ts
@@ -3,7 +3,10 @@ import { TollFreeVerificationApi } from '../../api';
 import { Configuration } from '../../configuration';
 
 describe('TollFreeVerificationApi', () => {
-    const config = new Configuration({username: BW_USERNAME, password: BW_PASSWORD});
+    const config = new Configuration({
+        clientId: BW_CLIENT_ID,
+        clientSecret: BW_CLIENT_SECRET
+    });
     const tfvApi = new TollFreeVerificationApi(config);
 
     describe('listTollFreeUseCases', () => {
diff --git a/tests/smoke/transcriptions-api.test.ts b/tests/smoke/transcriptions-api.test.ts
index 9f1e8bd..6be9cab 100644
--- a/tests/smoke/transcriptions-api.test.ts
+++ b/tests/smoke/transcriptions-api.test.ts
@@ -6,7 +6,10 @@ import { cleanupCalls, createMantecaCall, setupManteca, sleep } from "../callUti
 
 describe('TranscriptionsApi', () => {
     jest.setTimeout(240000);
-    const config = new Configuration({username: BW_USERNAME, password: BW_PASSWORD});
+    const config = new Configuration({
+        clientId: BW_CLIENT_ID,
+        clientSecret: BW_CLIENT_SECRET
+    });
     const callsApi = new CallsApi(config);
     const transcriptionsApi = new TranscriptionsApi(config);