diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7b3c3c79e..04e71cfac 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # CHANGELOG
 
+## v8.0.1 (2025-05-27)
+
+- Corrects the endpoint used for creating/updating UPS accounts
+
 ## v8.0.0 (2025-04-28)
 
 See our [Upgrade Guide](UPGRADE_GUIDE.md#upgrading-from-7x-to-80) for more details.
diff --git a/README.md b/README.md
index fd6d2e95d..88ecfd083 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ Add this to your project's POM:
 <dependency>
   <groupId>com.easypost</groupId>
   <artifactId>easypost-api-client</artifactId>
-  <version>8.0.0</version>
+  <version>8.0.1</version>
 </dependency>
 ```
 
@@ -25,7 +25,7 @@ Add this to your project's POM:
 Add this to your project's build file:
 
 ```groovy
-implementation "com.easypost:easypost-api-client:8.0.0"
+implementation "com.easypost:easypost-api-client:8.0.1"
 ```
 
 **NOTE:** [Google Gson](http://code.google.com/p/google-gson/) is required.
diff --git a/VERSION b/VERSION
index ae9a76b92..cd1d2e94f 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-8.0.0
+8.0.1
diff --git a/pom.xml b/pom.xml
index f5d54eef8..6353fd608 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
     <groupId>com.easypost</groupId>
     <artifactId>easypost-api-client</artifactId>
 
-    <version>8.0.0</version>
+    <version>8.0.1</version>
     <packaging>jar</packaging>
 
     <name>com.easypost:easypost-api-client</name>
diff --git a/src/main/java/com/easypost/Constants.java b/src/main/java/com/easypost/Constants.java
index 5485932de..2a4bef91f 100644
--- a/src/main/java/com/easypost/Constants.java
+++ b/src/main/java/com/easypost/Constants.java
@@ -65,12 +65,8 @@ public abstract static class CarrierAccountTypes {
             "FedexAccount", "FedexSmartpostAccount"
         );
 
-        public static final List<String> UPS_OAUTH_CARRIER_ACCOUNT_TYPES = ImmutableList.of(
-            "UpsAccount", "UpsMailInnovationsAccount", "UpsSurepostAccount"
-        );
-
         public static final List<String> CARRIER_ACCOUNT_TYPES_WITH_CUSTOM_OAUTH = ImmutableList.of(
-            "AmazonShippingAccount"
+            "AmazonShippingAccount", "UpsAccount", "UpsMailInnovationsAccount", "UpsSurepostAccount"
         );
     }
 
diff --git a/src/main/java/com/easypost/service/CarrierAccountService.java b/src/main/java/com/easypost/service/CarrierAccountService.java
index 34f2a21f7..9c4329188 100644
--- a/src/main/java/com/easypost/service/CarrierAccountService.java
+++ b/src/main/java/com/easypost/service/CarrierAccountService.java
@@ -88,14 +88,9 @@ public List<CarrierAccount> all(final Map<String, Object> params) throws EasyPos
      * @throws EasyPostException when the request fails.
      */
     public CarrierAccount update(String id, final Map<String, Object> params) throws EasyPostException {
-        CarrierAccount carrierAccount = this.retrieve(id);
-        String type = (String) carrierAccount.getType();
+        String endpoint = "carrier_accounts/" + id;
         Map<String, Object> wrappedParams = new HashMap<String, Object>();
-        wrappedParams.put(selectTopLayerKey(type), params);
-
-        String endpoint = (Constants.CarrierAccountTypes.UPS_OAUTH_CARRIER_ACCOUNT_TYPES.contains(type) 
-                  ? "ups_oauth_registrations/"
-                  : "carrier_accounts/") + id;
+        wrappedParams.put("carrier_account", params);
 
         return Requestor.request(RequestMethod.PUT, endpoint, wrappedParams, CarrierAccount.class,
                 client);
@@ -123,8 +118,6 @@ public void delete(String id) throws EasyPostException {
     private static String selectCarrierAccountCreationEndpoint(final String carrierAccountType) {
         if (Constants.CarrierAccountTypes.CARRIER_ACCOUNT_TYPES_WITH_CUSTOM_WORKFLOW.contains(carrierAccountType)) {
             return "carrier_accounts/register";
-        } else if (Constants.CarrierAccountTypes.UPS_OAUTH_CARRIER_ACCOUNT_TYPES.contains(carrierAccountType)) {
-            return "ups_oauth_registrations";
         } else if (Constants.CarrierAccountTypes.CARRIER_ACCOUNT_TYPES_WITH_CUSTOM_OAUTH.contains(carrierAccountType)) {
             return "carrier_accounts/register_oauth";
         } else {
@@ -146,9 +139,7 @@ private static String selectTopLayerKey(final String carrierAccountType) throws
                     String.format(Constants.ErrorMessages.MISSING_REQUIRED_PARAMETER, "carrier account type"));
         }
 
-        if (Constants.CarrierAccountTypes.UPS_OAUTH_CARRIER_ACCOUNT_TYPES.contains(carrierAccountType)) {
-            return "ups_oauth_registrations";
-        } else if (Constants.CarrierAccountTypes.CARRIER_ACCOUNT_TYPES_WITH_CUSTOM_OAUTH.contains(carrierAccountType)) {
+        if (Constants.CarrierAccountTypes.CARRIER_ACCOUNT_TYPES_WITH_CUSTOM_OAUTH.contains(carrierAccountType)) {
             return "carrier_account_oauth_registrations";
         } else {
             return "carrier_account";
diff --git a/src/test/cassettes/carrier_account/create_with_ups.json b/src/test/cassettes/carrier_account/create_with_ups.json
index 20c3694d8..84c28fdf4 100644
--- a/src/test/cassettes/carrier_account/create_with_ups.json
+++ b/src/test/cassettes/carrier_account/create_with_ups.json
@@ -1,8 +1,8 @@
 [
   {
-    "recordedAt": 1723823790,
+    "recordedAt": 1748029863,
     "request": {
-      "body": "{\n  \"ups_oauth_registrations\": {\n    \"account_number\": \"123456789\",\n    \"type\": \"UpsAccount\"\n  }\n}",
+      "body": "{\n  \"carrier_account_oauth_registrations\": {\n    \"account_number\": \"123456789\",\n    \"type\": \"UpsAccount\"\n  }\n}",
       "method": "POST",
       "headers": {
         "Accept-Charset": [
@@ -15,23 +15,23 @@
           "application/json"
         ]
       },
-      "uri": "https://api.easypost.com/v2/ups_oauth_registrations"
+      "uri": "https://api.easypost.com/v2/carrier_accounts/register_oauth"
     },
     "response": {
-      "body": "{\n  \"readable\": \"UPS\",\n  \"credentials\": {},\n  \"created_at\": \"2024-08-16T15:56:30Z\",\n  \"description\": null,\n  \"type\": \"UpsAccount\",\n  \"reference\": null,\n  \"updated_at\": \"2024-08-16T15:56:30Z\",\n  \"clone\": false,\n  \"billing_type\": \"carrier\",\n  \"logo\": null,\n  \"id\": \"ca_307880850ded401bb4e3bb3d68a561a8\",\n  \"fields\": {\n    \"credentials\": {}\n  },\n  \"object\": \"CarrierAccount\"\n}",
+      "body": "{\n  \"readable\": \"UPS\",\n  \"credentials\": {},\n  \"created_at\": \"2025-05-23T19:51:03Z\",\n  \"description\": null,\n  \"type\": \"UpsAccount\",\n  \"reference\": null,\n  \"updated_at\": \"2025-05-23T19:51:03Z\",\n  \"clone\": false,\n  \"billing_type\": \"carrier\",\n  \"logo\": null,\n  \"id\": \"ca_4e02b530040d413399f4c5d4216632ea\",\n  \"fields\": {\n    \"credentials\": {}\n  },\n  \"object\": \"CarrierAccount\"\n}",
       "httpVersion": null,
       "headers": {
         "null": [
           "HTTP/1.1 201 Created"
         ],
         "content-length": [
-          "1400"
+          "1404"
         ],
         "expires": [
           "0"
         ],
         "x-node": [
-          "bigweb38nuq"
+          "bigweb55nuq"
         ],
         "x-frame-options": [
           "SAMEORIGIN"
@@ -58,23 +58,23 @@
           "nosniff"
         ],
         "x-ep-request-uuid": [
-          "8a4bf43f66bf76aee786b4c600357f02"
+          "6be4a8f76830d1a7e787bc810049d1d5"
         ],
         "x-proxied": [
-          "intlb3nuq c0f5e722d1",
-          "extlb1nuq b6e1b5034c"
+          "intlb4nuq 668d3fc830",
+          "extlb1nuq 99aac35317"
         ],
         "referrer-policy": [
           "strict-origin-when-cross-origin"
         ],
         "x-runtime": [
-          "0.219979"
+          "0.093783"
         ],
         "content-type": [
           "application/json; charset\u003dutf-8"
         ],
         "x-version-label": [
-          "easypost-202408152333-48cda4a73e-master"
+          "easypost-202505231841-d89645a184-master"
         ],
         "cache-control": [
           "private, no-cache, no-store"
@@ -84,12 +84,12 @@
         "code": 201,
         "message": "Created"
       },
-      "uri": "https://api.easypost.com/v2/ups_oauth_registrations"
+      "uri": "https://api.easypost.com/v2/carrier_accounts/register_oauth"
     },
-    "duration": 436
+    "duration": 301
   },
   {
-    "recordedAt": 1723823790,
+    "recordedAt": 1748029863,
     "request": {
       "body": "",
       "method": "GET",
@@ -101,23 +101,23 @@
           "REDACTED"
         ]
       },
-      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_307880850ded401bb4e3bb3d68a561a8"
+      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_4e02b530040d413399f4c5d4216632ea"
     },
     "response": {
-      "body": "{\n  \"readable\": \"UPS\",\n  \"credentials\": {},\n  \"created_at\": \"2024-08-16T15:56:30Z\",\n  \"description\": null,\n  \"type\": \"UpsAccount\",\n  \"reference\": null,\n  \"updated_at\": \"2024-08-16T15:56:30Z\",\n  \"clone\": false,\n  \"billing_type\": \"carrier\",\n  \"logo\": null,\n  \"id\": \"ca_307880850ded401bb4e3bb3d68a561a8\",\n  \"fields\": {\n    \"credentials\": {}\n  },\n  \"object\": \"CarrierAccount\"\n}",
+      "body": "{\n  \"readable\": \"UPS\",\n  \"credentials\": {},\n  \"created_at\": \"2025-05-23T19:51:03Z\",\n  \"description\": null,\n  \"type\": \"UpsAccount\",\n  \"reference\": null,\n  \"updated_at\": \"2025-05-23T19:51:03Z\",\n  \"clone\": false,\n  \"billing_type\": \"carrier\",\n  \"logo\": null,\n  \"id\": \"ca_4e02b530040d413399f4c5d4216632ea\",\n  \"fields\": {\n    \"credentials\": {}\n  },\n  \"object\": \"CarrierAccount\"\n}",
       "httpVersion": null,
       "headers": {
         "null": [
           "HTTP/1.1 200 OK"
         ],
         "content-length": [
-          "1400"
+          "1404"
         ],
         "expires": [
           "0"
         ],
         "x-node": [
-          "bigweb42nuq"
+          "bigweb41nuq"
         ],
         "x-frame-options": [
           "SAMEORIGIN"
@@ -144,23 +144,23 @@
           "nosniff"
         ],
         "x-ep-request-uuid": [
-          "8a4bf43e66bf76aee786b4c700357f95"
+          "6be4a8f36830d1a7e787bc820049d225"
         ],
         "x-proxied": [
-          "intlb3nuq c0f5e722d1",
-          "extlb1nuq b6e1b5034c"
+          "intlb3nuq 668d3fc830",
+          "extlb1nuq 99aac35317"
         ],
         "referrer-policy": [
           "strict-origin-when-cross-origin"
         ],
         "x-runtime": [
-          "0.032944"
+          "0.030623"
         ],
         "content-type": [
           "application/json; charset\u003dutf-8"
         ],
         "x-version-label": [
-          "easypost-202408152333-48cda4a73e-master"
+          "easypost-202505231841-d89645a184-master"
         ],
         "cache-control": [
           "private, no-cache, no-store"
@@ -170,12 +170,12 @@
         "code": 200,
         "message": "OK"
       },
-      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_307880850ded401bb4e3bb3d68a561a8"
+      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_4e02b530040d413399f4c5d4216632ea"
     },
-    "duration": 244
+    "duration": 255
   },
   {
-    "recordedAt": 1723823790,
+    "recordedAt": 1748029864,
     "request": {
       "body": "",
       "method": "DELETE",
@@ -187,7 +187,7 @@
           "REDACTED"
         ]
       },
-      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_307880850ded401bb4e3bb3d68a561a8"
+      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_4e02b530040d413399f4c5d4216632ea"
     },
     "response": {
       "body": "{}",
@@ -203,7 +203,7 @@
           "0"
         ],
         "x-node": [
-          "bigweb43nuq"
+          "bigweb41nuq"
         ],
         "x-frame-options": [
           "SAMEORIGIN"
@@ -223,9 +223,6 @@
         "strict-transport-security": [
           "max-age\u003d31536000; includeSubDomains; preload"
         ],
-        "x-canary": [
-          "direct"
-        ],
         "x-xss-protection": [
           "1; mode\u003dblock"
         ],
@@ -233,23 +230,23 @@
           "nosniff"
         ],
         "x-ep-request-uuid": [
-          "8a4bf43a66bf76aee786b4c800357fc9"
+          "6be4a8f66830d1a7e787bc830049d25e"
         ],
         "x-proxied": [
-          "intlb3nuq c0f5e722d1",
-          "extlb1nuq b6e1b5034c"
+          "intlb3nuq 668d3fc830",
+          "extlb1nuq 99aac35317"
         ],
         "referrer-policy": [
           "strict-origin-when-cross-origin"
         ],
         "x-runtime": [
-          "0.086467"
+          "0.074559"
         ],
         "content-type": [
           "application/json; charset\u003dutf-8"
         ],
         "x-version-label": [
-          "easypost-202408152333-48cda4a73e-master"
+          "easypost-202505231841-d89645a184-master"
         ],
         "cache-control": [
           "private, no-cache, no-store"
@@ -259,8 +256,8 @@
         "code": 200,
         "message": "OK"
       },
-      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_307880850ded401bb4e3bb3d68a561a8"
+      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_4e02b530040d413399f4c5d4216632ea"
     },
-    "duration": 290
+    "duration": 282
   }
 ]
\ No newline at end of file
diff --git a/src/test/cassettes/carrier_account/update.json b/src/test/cassettes/carrier_account/update.json
index e2c02dd62..237bdeb4e 100644
--- a/src/test/cassettes/carrier_account/update.json
+++ b/src/test/cassettes/carrier_account/update.json
@@ -1,6 +1,6 @@
 [
   {
-    "recordedAt": 1723823793,
+    "recordedAt": 1748029864,
     "request": {
       "body": "{\n  \"carrier_account\": {\n    \"test_credentials\": {},\n    \"credentials\": {},\n    \"type\": \"DhlEcsAccount\"\n  }\n}",
       "method": "POST",
@@ -18,20 +18,20 @@
       "uri": "https://api.easypost.com/v2/carrier_accounts"
     },
     "response": {
-      "body": "{\n  \"readable\": \"DHL eCommerce Solutions\",\n  \"test_credentials\": {},\n  \"credentials\": {},\n  \"created_at\": \"2024-08-16T15:56:33Z\",\n  \"description\": \"DHL eCommerce Solutions Account\",\n  \"type\": \"DhlEcsAccount\",\n  \"reference\": null,\n  \"updated_at\": \"2024-08-16T15:56:33Z\",\n  \"clone\": false,\n  \"billing_type\": \"carrier\",\n  \"logo\": null,\n  \"id\": \"ca_67c2a52fc42a43f0abf36b7a56b723f0\",\n  \"fields\": {\n    \"test_credentials\": {},\n    \"credentials\": {}\n  },\n  \"object\": \"CarrierAccount\"\n}",
+      "body": "{\n  \"readable\": \"DHL eCommerce\",\n  \"test_credentials\": {},\n  \"credentials\": {},\n  \"created_at\": \"2025-05-23T19:51:04Z\",\n  \"description\": \"DHL eCommerce Account\",\n  \"type\": \"DhlEcsAccount\",\n  \"reference\": null,\n  \"updated_at\": \"2025-05-23T19:51:04Z\",\n  \"clone\": false,\n  \"billing_type\": \"carrier\",\n  \"logo\": null,\n  \"id\": \"ca_4aee2085dbb2411e9c77740c63ea548d\",\n  \"fields\": {\n    \"test_credentials\": {},\n    \"credentials\": {}\n  },\n  \"object\": \"CarrierAccount\"\n}",
       "httpVersion": null,
       "headers": {
         "null": [
           "HTTP/1.1 201 Created"
         ],
         "content-length": [
-          "1469"
+          "1369"
         ],
         "expires": [
           "0"
         ],
         "x-node": [
-          "bigweb34nuq"
+          "bigweb32nuq"
         ],
         "x-frame-options": [
           "SAMEORIGIN"
@@ -51,6 +51,9 @@
         "strict-transport-security": [
           "max-age\u003d31536000; includeSubDomains; preload"
         ],
+        "x-canary": [
+          "direct"
+        ],
         "x-xss-protection": [
           "1; mode\u003dblock"
         ],
@@ -58,23 +61,23 @@
           "nosniff"
         ],
         "x-ep-request-uuid": [
-          "8a4bf43a66bf76b1e786b7e000358261"
+          "6be4a8f16830d1a8e787bf960049d31a"
         ],
         "x-proxied": [
-          "intlb3nuq c0f5e722d1",
-          "extlb1nuq b6e1b5034c"
+          "intlb4nuq 668d3fc830",
+          "extlb1nuq 99aac35317"
         ],
         "referrer-policy": [
           "strict-origin-when-cross-origin"
         ],
         "x-runtime": [
-          "0.072946"
+          "0.062564"
         ],
         "content-type": [
           "application/json; charset\u003dutf-8"
         ],
         "x-version-label": [
-          "easypost-202408152333-48cda4a73e-master"
+          "easypost-202505231841-d89645a184-master"
         ],
         "cache-control": [
           "private, no-cache, no-store"
@@ -86,38 +89,41 @@
       },
       "uri": "https://api.easypost.com/v2/carrier_accounts"
     },
-    "duration": 278
+    "duration": 269
   },
   {
-    "recordedAt": 1723823794,
+    "recordedAt": 1748029865,
     "request": {
-      "body": "",
-      "method": "GET",
+      "body": "{\n  \"carrier_account\": {\n    \"description\": \"My custom description\"\n  }\n}",
+      "method": "PUT",
       "headers": {
         "Accept-Charset": [
           "UTF-8"
         ],
         "User-Agent": [
           "REDACTED"
+        ],
+        "Content-Type": [
+          "application/json"
         ]
       },
-      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_67c2a52fc42a43f0abf36b7a56b723f0"
+      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_4aee2085dbb2411e9c77740c63ea548d"
     },
     "response": {
-      "body": "{\n  \"readable\": \"DHL eCommerce Solutions\",\n  \"test_credentials\": {},\n  \"credentials\": {},\n  \"created_at\": \"2024-08-16T15:56:33Z\",\n  \"description\": \"My custom description\",\n  \"type\": \"DhlEcsAccount\",\n  \"reference\": null,\n  \"updated_at\": \"2024-08-16T15:56:33Z\",\n  \"clone\": false,\n  \"billing_type\": \"carrier\",\n  \"logo\": null,\n  \"id\": \"ca_67c2a52fc42a43f0abf36b7a56b723f0\",\n  \"fields\": {\n    \"test_credentials\": {},\n    \"credentials\": {}\n  },\n  \"object\": \"CarrierAccount\"\n}",
+      "body": "{\n  \"readable\": \"DHL eCommerce\",\n  \"test_credentials\": {},\n  \"credentials\": {},\n  \"created_at\": \"2025-05-23T19:51:04Z\",\n  \"description\": \"My custom description\",\n  \"type\": \"DhlEcsAccount\",\n  \"reference\": null,\n  \"updated_at\": \"2025-05-23T19:51:05Z\",\n  \"clone\": false,\n  \"billing_type\": \"carrier\",\n  \"logo\": null,\n  \"id\": \"ca_4aee2085dbb2411e9c77740c63ea548d\",\n  \"fields\": {\n    \"test_credentials\": {},\n    \"credentials\": {}\n  },\n  \"object\": \"CarrierAccount\"\n}",
       "httpVersion": null,
       "headers": {
         "null": [
           "HTTP/1.1 200 OK"
         ],
         "content-length": [
-          "1459"
+          "1369"
         ],
         "expires": [
           "0"
         ],
         "x-node": [
-          "bigweb38nuq"
+          "bigweb41nuq"
         ],
         "x-frame-options": [
           "SAMEORIGIN"
@@ -144,23 +150,23 @@
           "nosniff"
         ],
         "x-ep-request-uuid": [
-          "8a4bf44166bf76b2e786b7fb0035836d"
+          "6be4a8f16830d1a9e787bf980049d393"
         ],
         "x-proxied": [
-          "intlb3nuq c0f5e722d1",
-          "extlb1nuq b6e1b5034c"
+          "intlb3nuq 668d3fc830",
+          "extlb1nuq 99aac35317"
         ],
         "referrer-policy": [
           "strict-origin-when-cross-origin"
         ],
         "x-runtime": [
-          "0.033130"
+          "0.090270"
         ],
         "content-type": [
           "application/json; charset\u003dutf-8"
         ],
         "x-version-label": [
-          "easypost-202408152333-48cda4a73e-master"
+          "easypost-202505231841-d89645a184-master"
         ],
         "cache-control": [
           "private, no-cache, no-store"
@@ -170,43 +176,40 @@
         "code": 200,
         "message": "OK"
       },
-      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_67c2a52fc42a43f0abf36b7a56b723f0"
+      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_4aee2085dbb2411e9c77740c63ea548d"
     },
-    "duration": 238
+    "duration": 316
   },
   {
-    "recordedAt": 1723823793,
+    "recordedAt": 1748029865,
     "request": {
-      "body": "{\n  \"carrier_account\": {\n    \"description\": \"My custom description\"\n  }\n}",
-      "method": "PUT",
+      "body": "",
+      "method": "GET",
       "headers": {
         "Accept-Charset": [
           "UTF-8"
         ],
         "User-Agent": [
           "REDACTED"
-        ],
-        "Content-Type": [
-          "application/json"
         ]
       },
-      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_67c2a52fc42a43f0abf36b7a56b723f0"
+      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_4aee2085dbb2411e9c77740c63ea548d"
     },
     "response": {
-      "body": "{\n  \"readable\": \"DHL eCommerce Solutions\",\n  \"test_credentials\": {},\n  \"credentials\": {},\n  \"created_at\": \"2024-08-16T15:56:33Z\",\n  \"description\": \"My custom description\",\n  \"type\": \"DhlEcsAccount\",\n  \"reference\": null,\n  \"updated_at\": \"2024-08-16T15:56:33Z\",\n  \"clone\": false,\n  \"billing_type\": \"carrier\",\n  \"logo\": null,\n  \"id\": \"ca_67c2a52fc42a43f0abf36b7a56b723f0\",\n  \"fields\": {\n    \"test_credentials\": {},\n    \"credentials\": {}\n  },\n  \"object\": \"CarrierAccount\"\n}",
+      "body": "{\n  \"readable\": \"DHL eCommerce\",\n  \"test_credentials\": {},\n  \"credentials\": {},\n  \"created_at\": \"2025-05-23T19:51:04Z\",\n  \"description\": \"My custom description\",\n  \"type\": \"DhlEcsAccount\",\n  \"reference\": null,\n  \"updated_at\": \"2025-05-23T19:51:05Z\",\n  \"clone\": false,\n  \"billing_type\": \"carrier\",\n  \"logo\": null,\n  \"id\": \"ca_4aee2085dbb2411e9c77740c63ea548d\",\n  \"fields\": {\n    \"test_credentials\": {},\n    \"credentials\": {}\n  },\n  \"object\": \"CarrierAccount\"\n}",
       "httpVersion": null,
       "headers": {
         "null": [
           "HTTP/1.1 200 OK"
         ],
         "content-length": [
-          "1459"
+          "1369"
         ],
         "expires": [
           "0"
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         "x-node": [
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+          "bigweb43nuq"
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@@ -226,6 +229,9 @@
         "strict-transport-security": [
           "max-age\u003d31536000; includeSubDomains; preload"
         ],
+        "x-canary": [
+          "direct"
+        ],
         "x-xss-protection": [
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@@ -233,23 +239,23 @@
           "nosniff"
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-          "8a4bf43a66bf76b1e786b7fa0035831c"
+          "6be4a8f26830d1a9e787bf9a0049d410"
         ],
         "x-proxied": [
-          "intlb4nuq c0f5e722d1",
-          "extlb1nuq b6e1b5034c"
+          "intlb3nuq 668d3fc830",
+          "extlb1nuq 99aac35317"
         ],
         "referrer-policy": [
           "strict-origin-when-cross-origin"
         ],
         "x-runtime": [
-          "0.092559"
+          "0.033165"
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         ],
         "x-version-label": [
-          "easypost-202408152333-48cda4a73e-master"
+          "easypost-202505231841-d89645a184-master"
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         "cache-control": [
           "private, no-cache, no-store"
@@ -259,12 +265,12 @@
         "code": 200,
         "message": "OK"
       },
-      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_67c2a52fc42a43f0abf36b7a56b723f0"
+      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_4aee2085dbb2411e9c77740c63ea548d"
     },
-    "duration": 296
+    "duration": 242
   },
   {
-    "recordedAt": 1723823794,
+    "recordedAt": 1748029865,
     "request": {
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       "method": "DELETE",
@@ -276,7 +282,7 @@
           "REDACTED"
         ]
       },
-      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_67c2a52fc42a43f0abf36b7a56b723f0"
+      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_4aee2085dbb2411e9c77740c63ea548d"
     },
     "response": {
       "body": "{}",
@@ -292,7 +298,7 @@
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         ],
         "x-node": [
-          "bigweb43nuq"
+          "bigweb55nuq"
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@@ -312,9 +318,6 @@
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-        "x-canary": [
-          "direct"
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@@ -322,23 +325,23 @@
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-          "8a4bf43f66bf76b2e786b7fc003583b7"
+          "6be4a8f46830d1a9e787bf9b0049d449"
         ],
         "x-proxied": [
-          "intlb4nuq c0f5e722d1",
-          "extlb1nuq b6e1b5034c"
+          "intlb4nuq 668d3fc830",
+          "extlb1nuq 99aac35317"
         ],
         "referrer-policy": [
           "strict-origin-when-cross-origin"
         ],
         "x-runtime": [
-          "0.059553"
+          "0.054416"
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           "application/json; charset\u003dutf-8"
         ],
         "x-version-label": [
-          "easypost-202408152333-48cda4a73e-master"
+          "easypost-202505231841-d89645a184-master"
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           "private, no-cache, no-store"
@@ -348,8 +351,8 @@
         "code": 200,
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       },
-      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_67c2a52fc42a43f0abf36b7a56b723f0"
+      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_4aee2085dbb2411e9c77740c63ea548d"
     },
-    "duration": 269
+    "duration": 258
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 ]
\ No newline at end of file
diff --git a/src/test/cassettes/carrier_account/update_ups.json b/src/test/cassettes/carrier_account/update_ups.json
index 2491830d3..52977e65b 100644
--- a/src/test/cassettes/carrier_account/update_ups.json
+++ b/src/test/cassettes/carrier_account/update_ups.json
@@ -1,8 +1,8 @@
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-    "recordedAt": 1723823786,
+    "recordedAt": 1748029861,
     "request": {
-      "body": "{\n  \"ups_oauth_registrations\": {\n    \"account_number\": \"123456789\",\n    \"type\": \"UpsAccount\"\n  }\n}",
+      "body": "{\n  \"carrier_account_oauth_registrations\": {\n    \"account_number\": \"123456789\",\n    \"type\": \"UpsAccount\"\n  }\n}",
       "method": "POST",
       "headers": {
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@@ -15,10 +15,10 @@
           "application/json"
         ]
       },
-      "uri": "https://api.easypost.com/v2/ups_oauth_registrations"
+      "uri": "https://api.easypost.com/v2/carrier_accounts/register_oauth"
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     "response": {
-      "body": "{\n  \"readable\": \"UPS\",\n  \"credentials\": {},\n  \"created_at\": \"2024-08-16T15:56:26Z\",\n  \"description\": null,\n  \"type\": \"UpsAccount\",\n  \"reference\": null,\n  \"updated_at\": \"2024-08-16T15:56:26Z\",\n  \"clone\": false,\n  \"billing_type\": \"carrier\",\n  \"logo\": null,\n  \"id\": \"ca_1f9cf202a5f64d388583b217e4e9e115\",\n  \"fields\": {\n    \"credentials\": {}\n  },\n  \"object\": \"CarrierAccount\"\n}",
+      "body": "{\n  \"readable\": \"UPS\",\n  \"credentials\": {},\n  \"created_at\": \"2025-05-23T19:51:01Z\",\n  \"description\": null,\n  \"type\": \"UpsAccount\",\n  \"reference\": null,\n  \"updated_at\": \"2025-05-23T19:51:01Z\",\n  \"clone\": false,\n  \"billing_type\": \"carrier\",\n  \"logo\": null,\n  \"id\": \"ca_ee686a5ce36748d7b8af5f15097d13d4\",\n  \"fields\": {\n    \"credentials\": {}\n  },\n  \"object\": \"CarrierAccount\"\n}",
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       "headers": {
         "null": [
@@ -31,7 +31,7 @@
           "0"
         ],
         "x-node": [
-          "bigweb34nuq"
+          "bigweb54nuq"
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           "SAMEORIGIN"
@@ -58,23 +58,23 @@
           "nosniff"
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         "x-ep-request-uuid": [
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+          "6be4a8f36830d1a5e787bc610049cfde"
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         "x-proxied": [
-          "intlb4nuq c0f5e722d1",
-          "extlb1nuq b6e1b5034c"
+          "intlb3nuq 668d3fc830",
+          "extlb1nuq 99aac35317"
         ],
         "referrer-policy": [
           "strict-origin-when-cross-origin"
         ],
         "x-runtime": [
-          "0.083179"
+          "0.083741"
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         ],
         "x-version-label": [
-          "easypost-202408152333-48cda4a73e-master"
+          "easypost-202505231841-d89645a184-master"
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         "cache-control": [
           "private, no-cache, no-store"
@@ -84,40 +84,43 @@
         "code": 201,
         "message": "Created"
       },
-      "uri": "https://api.easypost.com/v2/ups_oauth_registrations"
+      "uri": "https://api.easypost.com/v2/carrier_accounts/register_oauth"
     },
-    "duration": 294
+    "duration": 297
   },
   {
-    "recordedAt": 1723823787,
+    "recordedAt": 1748029862,
     "request": {
-      "body": "",
-      "method": "GET",
+      "body": "{\n  \"carrier_account\": {\n    \"account_number\": \"987654321\"\n  }\n}",
+      "method": "PUT",
       "headers": {
         "Accept-Charset": [
           "UTF-8"
         ],
         "User-Agent": [
           "REDACTED"
+        ],
+        "Content-Type": [
+          "application/json"
         ]
       },
-      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_1f9cf202a5f64d388583b217e4e9e115"
+      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_ee686a5ce36748d7b8af5f15097d13d4"
     },
     "response": {
-      "body": "{\n  \"readable\": \"UPS\",\n  \"credentials\": {},\n  \"created_at\": \"2024-08-16T15:56:26Z\",\n  \"description\": null,\n  \"type\": \"UpsAccount\",\n  \"reference\": null,\n  \"updated_at\": \"2024-08-16T15:56:27Z\",\n  \"clone\": false,\n  \"billing_type\": \"carrier\",\n  \"logo\": null,\n  \"id\": \"ca_1f9cf202a5f64d388583b217e4e9e115\",\n  \"fields\": {\n    \"credentials\": {}\n  },\n  \"object\": \"CarrierAccount\"\n}",
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       "httpVersion": null,
       "headers": {
         "null": [
           "HTTP/1.1 200 OK"
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         "content-length": [
-          "1400"
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         "expires": [
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         "x-proxied": [
-          "intlb4nuq c0f5e722d1",
-          "extlb1nuq b6e1b5034c"
+          "intlb4nuq 668d3fc830",
+          "extlb1nuq 99aac35317"
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         "referrer-policy": [
           "strict-origin-when-cross-origin"
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         "x-runtime": [
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         "message": "OK"
       },
-      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_1f9cf202a5f64d388583b217e4e9e115"
+      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_ee686a5ce36748d7b8af5f15097d13d4"
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-    "duration": 239
+    "duration": 292
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-      "body": "{\n  \"ups_oauth_registrations\": {\n    \"account_number\": \"987654321\"\n  }\n}",
-      "method": "PUT",
+      "body": "",
+      "method": "GET",
       "headers": {
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           "UTF-8"
         ],
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-        "Content-Type": [
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         ]
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-      "uri": "https://api.easypost.com/v2/ups_oauth_registrations/ca_1f9cf202a5f64d388583b217e4e9e115"
+      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_ee686a5ce36748d7b8af5f15097d13d4"
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         "null": [
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         "content-length": [
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+          "1404"
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-          "extlb1nuq b6e1b5034c"
+          "intlb4nuq 668d3fc830",
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       },
-      "uri": "https://api.easypost.com/v2/ups_oauth_registrations/ca_1f9cf202a5f64d388583b217e4e9e115"
+      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_ee686a5ce36748d7b8af5f15097d13d4"
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-    "duration": 270
+    "duration": 245
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-    "recordedAt": 1723823788,
+    "recordedAt": 1748029862,
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@@ -279,7 +276,7 @@
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         ]
       },
-      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_1f9cf202a5f64d388583b217e4e9e115"
+      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_ee686a5ce36748d7b8af5f15097d13d4"
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     "response": {
       "body": "{}",
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+          "bigweb53nuq"
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+          "6be4a8f46830d1a6e787bc650049d0eb"
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-          "intlb3nuq c0f5e722d1",
-          "extlb1nuq b6e1b5034c"
+          "intlb4nuq 668d3fc830",
+          "extlb1nuq 99aac35317"
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           "strict-origin-when-cross-origin"
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         "message": "OK"
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-      "uri": "https://api.easypost.com/v2/carrier_accounts/ca_1f9cf202a5f64d388583b217e4e9e115"
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-    "duration": 261
+    "duration": 408
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