diff --git a/addons/api/addon/models/target.js b/addons/api/addon/models/target.js
index 48954ebbd..b50506dcb 100644
--- a/addons/api/addon/models/target.js
+++ b/addons/api/addon/models/target.js
@@ -152,7 +152,7 @@ export default class TargetModel extends GeneratedTargetModel {
   }
 
   /**
-   * Adds credential libraries via the `add-credential-libraries` method.
+   * Adds credential libraries via the `add-credential-sources` method.
    * See serializer and adapter for more information.
    * @param {[string]} credentialLibraryIDs
    * @param {object} options
@@ -161,7 +161,7 @@ export default class TargetModel extends GeneratedTargetModel {
    */
   addCredentialSources(credentialLibraryIDs, options = { adapterOptions: {} }) {
     const defaultAdapterOptions = {
-      method: 'add-credential-libraries',
+      method: 'add-credential-sources',
       credentialLibraryIDs,
     };
     // There is no "deep merge" in ES.
@@ -175,7 +175,7 @@ export default class TargetModel extends GeneratedTargetModel {
   }
 
   /**
-   * Delete credential libraries via the `remove-credential-libraries` method.
+   * Delete credential libraries via the `remove-credential-sources` method.
    * See serializer and adapter for more information.
    * @param {[string]} credentialLibraryIDs
    * @param {object} options
@@ -187,7 +187,7 @@ export default class TargetModel extends GeneratedTargetModel {
     options = { adapterOptions: {} }
   ) {
     const defaultAdapterOptions = {
-      method: 'remove-credential-libraries',
+      method: 'remove-credential-sources',
       credentialLibraryIDs,
     };
     // There is no "deep merge" in ES.
@@ -201,7 +201,7 @@ export default class TargetModel extends GeneratedTargetModel {
   }
 
   /**
-   * Delete a single credential library set via the `remove-credential-libraries` method.
+   * Delete a single credential library set via the `remove-credential-sources` method.
    * @param {number} credentialLibraryID
    * @param {object} options
    * @return {Promise}
diff --git a/addons/api/mirage/config.js b/addons/api/mirage/config.js
index 90d290801..b39dff5a2 100644
--- a/addons/api/mirage/config.js
+++ b/addons/api/mirage/config.js
@@ -384,7 +384,7 @@ export default function () {
         });
       }
       // If adding credential libraries, push them into the array
-      if (method === 'add-credential-libraries') {
+      if (method === 'add-credential-sources') {
         updatedAttrs.credentialLibraryIds = target.credentialLibraryIds;
         attrs.applicationCredentialSourceIds.forEach((id) => {
           if (!updatedAttrs.credentialLibraryIds.includes(id)) {
@@ -393,7 +393,7 @@ export default function () {
         });
       }
       // If deleting credential libraries, filter them out of the array
-      if (method === 'remove-credential-libraries') {
+      if (method === 'remove-credential-sources') {
         updatedAttrs.credentialLibraryIds = target.credentialLibraryIds;
         updatedAttrs.credentialLibraryIds =
           updatedAttrs.credentialLibraryIds.filter((id) => {
diff --git a/addons/api/tests/unit/models/target-test.js b/addons/api/tests/unit/models/target-test.js
index b753188ad..51be507e7 100644
--- a/addons/api/tests/unit/models/target-test.js
+++ b/addons/api/tests/unit/models/target-test.js
@@ -283,7 +283,7 @@ module('Unit | Model | target', function (hooks) {
   test('it has an `addCredentialSources` method that targets a specific POST API endpoint and serialization', async function (assert) {
     assert.expect(1);
     this.server.post(
-      '/v1/targets/123abc:add-credential-libraries',
+      '/v1/targets/123abc:add-credential-sources',
       (schema, request) => {
         const body = JSON.parse(request.requestBody);
         assert.deepEqual(body, {
@@ -317,7 +317,7 @@ module('Unit | Model | target', function (hooks) {
   test('it has a `removeCredentialSources` method that targets a specific POST API endpoint and serialization', async function (assert) {
     assert.expect(1);
     this.server.post(
-      '/v1/targets/123abc:remove-credential-libraries',
+      '/v1/targets/123abc:remove-credential-sources',
       (schema, request) => {
         const body = JSON.parse(request.requestBody);
         assert.deepEqual(body, {
@@ -351,7 +351,7 @@ module('Unit | Model | target', function (hooks) {
   test('it has a `removeCredentialSource` method that deletes a single credential library using `removeCredentialSources` method', async function (assert) {
     assert.expect(1);
     this.server.post(
-      '/v1/targets/123abc:remove-credential-libraries',
+      '/v1/targets/123abc:remove-credential-sources',
       (schema, request) => {
         const body = JSON.parse(request.requestBody);
         assert.deepEqual(body, {