diff --git a/addons/api/addon/serializers/application.js b/addons/api/addon/serializers/application.js
index f1e582cbb..f25f5d702 100644
--- a/addons/api/addon/serializers/application.js
+++ b/addons/api/addon/serializers/application.js
@@ -1,7 +1,6 @@
 import RESTSerializer from '@ember-data/serializer/rest';
 import { underscore } from '@ember/string';
 import { get } from '@ember/object';
-import { copy } from 'ember-copy';
 
 /**
  * Manages serialization/normalization of data to/from the API.
@@ -129,7 +128,7 @@ export default class ApplicationSerializer extends RESTSerializer {
     );
     // Copy the data rooted under `items` in the existing payload into the new
     // payload under the expected root key name.
-    transformedPayload[payloadKey] = copy(payload.items, true);
+    transformedPayload[payloadKey] = structuredClone(payload.items);
     // Return the result of normalizing the transformed payload.
     return super.normalizeArrayResponse(
       store,
@@ -156,7 +155,7 @@ export default class ApplicationSerializer extends RESTSerializer {
    */
   normalizeSingleResponse(store, primaryModelClass, payload, id, requestType) {
     // Copy payload (mostly to prevent mocking issues)
-    payload = copy(payload, true);
+    payload = structuredClone(payload);
     // Check for and normalize missing arrays
     payload = this.normalizeMissingArrays(store, primaryModelClass, payload);
     // Setup a new payload data structure.
@@ -211,7 +210,7 @@ export default class ApplicationSerializer extends RESTSerializer {
    * @return {Object}
    */
   normalize(typeClass, hash) {
-    let normalizedHash = copy(hash, true);
+    let normalizedHash = structuredClone(hash);
     const scopeID = get(normalizedHash, 'scope.id');
     const scopeType = get(normalizedHash, 'scope.type');
     if (scopeID) normalizedHash.scope.scope_id = scopeID;
@@ -300,7 +299,7 @@ export default class ApplicationSerializer extends RESTSerializer {
     id,
     requestType
   ) {
-    const newPayload = copy(payload, true);
+    const newPayload = structuredClone(payload);
 
     primaryModelClass.attributes.forEach((attribute) => {
       const {
diff --git a/addons/api/addon/serializers/auth-method.js b/addons/api/addon/serializers/auth-method.js
index 22c01a247..9d8d8fada 100644
--- a/addons/api/addon/serializers/auth-method.js
+++ b/addons/api/addon/serializers/auth-method.js
@@ -1,6 +1,4 @@
 import ApplicationSerializer from './application';
-import { copy } from 'ember-copy';
-
 export default class AuthMethodSerializer extends ApplicationSerializer {
   // =methods
 
@@ -86,7 +84,7 @@ export default class AuthMethodSerializer extends ApplicationSerializer {
    * @return {Object}
    */
   normalize(typeClass, hash, ...rest) {
-    let normalizedHash = copy(hash, true);
+    let normalizedHash = structuredClone(hash);
     // switch (normalizedHash.type) {
     //   case 'oidc':
     //     normalizedHash = this.normalizeOIDC(normalizedHash);
diff --git a/addons/api/addon/serializers/credential-store.js b/addons/api/addon/serializers/credential-store.js
index f715c7f97..74275dd96 100644
--- a/addons/api/addon/serializers/credential-store.js
+++ b/addons/api/addon/serializers/credential-store.js
@@ -1,6 +1,4 @@
 import ApplicationSerializer from './application';
-import { copy } from 'ember-copy';
-
 export default class CredentialStoreSerializer extends ApplicationSerializer {
   /**
    * @override
@@ -39,7 +37,7 @@ export default class CredentialStoreSerializer extends ApplicationSerializer {
   }
 
   normalize(typeClass, hash, ...rest) {
-    const normalizedHash = copy(hash, true);
+    const normalizedHash = structuredClone(hash);
     const normalized = super.normalize(typeClass, normalizedHash, ...rest);
     // Remove secret fields as we don't track them after being created/updated
     normalized.data.attributes.token = '';
diff --git a/addons/api/addon/serializers/credential.js b/addons/api/addon/serializers/credential.js
index 02720040a..503b17019 100644
--- a/addons/api/addon/serializers/credential.js
+++ b/addons/api/addon/serializers/credential.js
@@ -1,6 +1,4 @@
 import ApplicationSerializer from './application';
-import { copy } from 'ember-copy';
-
 export default class CredentialSerializer extends ApplicationSerializer {
   /**
    * @override
@@ -33,7 +31,7 @@ export default class CredentialSerializer extends ApplicationSerializer {
   }
 
   normalize(typeClass, hash, ...rest) {
-    const normalizedHash = copy(hash, true);
+    const normalizedHash = structuredClone(hash);
     const normalized = super.normalize(typeClass, normalizedHash, ...rest);
     // Remove secret fields as we don't track them after being created/updated
     normalized.data.attributes.password = '';
diff --git a/addons/api/addon/serializers/host-set.js b/addons/api/addon/serializers/host-set.js
index 4934be99f..ac5b05d2b 100644
--- a/addons/api/addon/serializers/host-set.js
+++ b/addons/api/addon/serializers/host-set.js
@@ -1,5 +1,4 @@
 import ApplicationSerializer from './application';
-import { copy } from 'ember-copy';
 
 const fieldByType = {
   aws: ['preferred_endpoints', 'filters', 'sync_interval_seconds'],
@@ -88,7 +87,7 @@ export default class HostSetSerializer extends ApplicationSerializer {
    * TODO:  remove once API consistently returns arrays.
    */
   normalize(typeClass, hash, ...rest) {
-    const normalizedHash = copy(hash, true);
+    const normalizedHash = structuredClone(hash);
 
     if (typeof normalizedHash?.attributes?.filters === 'string') {
       normalizedHash.attributes.filters = [normalizedHash.attributes.filters];
diff --git a/addons/api/addon/serializers/managed-group.js b/addons/api/addon/serializers/managed-group.js
index 0b15683d8..62910171f 100644
--- a/addons/api/addon/serializers/managed-group.js
+++ b/addons/api/addon/serializers/managed-group.js
@@ -1,6 +1,4 @@
 import ApplicationSerializer from './application';
-import { copy } from 'ember-copy';
-
 export default class ManagedGroupSerializer extends ApplicationSerializer {
   // =properties
 
@@ -21,7 +19,7 @@ export default class ManagedGroupSerializer extends ApplicationSerializer {
   }
 
   normalize(typeClass, hash, ...rest) {
-    const normalizedHash = copy(hash, true);
+    const normalizedHash = structuredClone(hash);
 
     if (normalizedHash?.attributes?.filter) {
       normalizedHash.attributes.filter_string =
diff --git a/addons/api/mirage/helpers/permissions.js b/addons/api/mirage/helpers/permissions.js
index ffda01359..a81a07c71 100644
--- a/addons/api/mirage/helpers/permissions.js
+++ b/addons/api/mirage/helpers/permissions.js
@@ -1,5 +1,3 @@
-import { copy } from 'ember-copy';
-
 /**
  * Allows development-time toggling of resource permissions via the window
  * querystring.  Pass a JSON object into the query to toggle permissions.
@@ -50,7 +48,7 @@ class ToggledCapabilities {
    */
   authorizedActionsFor(field) {
     if (this.#authorizedActions[field]) {
-      return copy(this.#authorizedActions[field], true);
+      return structuredClone(this.#authorizedActions[field]);
     }
   }
 }
diff --git a/addons/api/package.json b/addons/api/package.json
index 728c17be1..12ebf1cc9 100644
--- a/addons/api/package.json
+++ b/addons/api/package.json
@@ -27,7 +27,6 @@
     "ember-cli-babel": "^7.26.10",
     "ember-cli-htmlbars": "^6.1.0",
     "ember-cli-mirage": "^2.4.0",
-    "ember-copy": "^2.0.1",
     "ember-data": "~4.4.0",
     "ember-fetch": "^8.1.1"
   },
diff --git a/ui/admin/app/routes/scopes/scope/auth-methods/auth-method.js b/ui/admin/app/routes/scopes/scope/auth-methods/auth-method.js
index f80e83b55..01d8dd4e7 100644
--- a/ui/admin/app/routes/scopes/scope/auth-methods/auth-method.js
+++ b/ui/admin/app/routes/scopes/scope/auth-methods/auth-method.js
@@ -2,8 +2,6 @@ import Route from '@ember/routing/route';
 import { action } from '@ember/object';
 import { notifySuccess, notifyError } from 'core/decorators/notify';
 import { inject as service } from '@ember/service';
-import { copy } from 'ember-copy';
-
 export default class ScopesScopeAuthMethodsAuthMethodRoute extends Route {
   // =services
 
@@ -36,19 +34,25 @@ export default class ScopesScopeAuthMethodsAuthMethodRoute extends Route {
   @action
   edit(authMethod) {
     if (authMethod.claims_scopes) {
-      authMethod.claims_scopes = copy(authMethod.claims_scopes, true);
+      authMethod.claims_scopes = structuredClone(authMethod.claims_scopes);
     }
     if (authMethod.signing_algorithms) {
-      authMethod.signing_algorithms = copy(authMethod.signing_algorithms, true);
+      authMethod.signing_algorithms = structuredClone(
+        authMethod.signing_algorithms
+      );
     }
     if (authMethod.allowed_audiences) {
-      authMethod.allowed_audiences = copy(authMethod.allowed_audiences, true);
+      authMethod.allowed_audiences = structuredClone(
+        authMethod.allowed_audiences
+      );
     }
     if (authMethod.idp_ca_certs) {
-      authMethod.idp_ca_certs = copy(authMethod.idp_ca_certs, true);
+      authMethod.idp_ca_certs = structuredClone(authMethod.idp_ca_certs);
     }
     if (authMethod.account_claim_maps) {
-      authMethod.account_claim_maps = copy(authMethod.account_claim_maps, true);
+      authMethod.account_claim_maps = structuredClone(
+        authMethod.account_claim_maps
+      );
     }
   }
 
diff --git a/ui/admin/app/routes/scopes/scope/host-catalogs/host-catalog/host-sets/host-set.js b/ui/admin/app/routes/scopes/scope/host-catalogs/host-catalog/host-sets/host-set.js
index 4b81d1544..a61a0e990 100644
--- a/ui/admin/app/routes/scopes/scope/host-catalogs/host-catalog/host-sets/host-set.js
+++ b/ui/admin/app/routes/scopes/scope/host-catalogs/host-catalog/host-sets/host-set.js
@@ -1,8 +1,6 @@
 import Route from '@ember/routing/route';
 import { action } from '@ember/object';
 import { inject as service } from '@ember/service';
-import { copy } from 'ember-copy';
-
 export default class ScopesScopeHostCatalogsHostCatalogHostSetsHostSetRoute extends Route {
   // =services
 
@@ -33,10 +31,12 @@ export default class ScopesScopeHostCatalogsHostCatalogHostSetsHostSetRoute exte
   @action
   edit(hostSet) {
     if (hostSet.preferred_endpoints) {
-      hostSet.preferred_endpoints = copy(hostSet.preferred_endpoints, true);
+      hostSet.preferred_endpoints = structuredClone(
+        hostSet.preferred_endpoints
+      );
     }
     if (hostSet.filters) {
-      hostSet.filters = copy(hostSet.filters, true);
+      hostSet.filters = structuredClone(hostSet.filters);
     }
   }
 
diff --git a/yarn.lock b/yarn.lock
index 545318685..01ebf64a2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -13559,13 +13559,6 @@ ember-cookies@^0.5.0, ember-cookies@^0.5.2:
     ember-cli-babel "^7.1.0"
     ember-getowner-polyfill "^1.1.0 || ^2.0.0"
 
-ember-copy@^2.0.1:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/ember-copy/-/ember-copy-2.0.1.tgz#13192b12a250324bb4a8b4547a680b113f4e3041"
-  integrity sha512-N/XFvZszrzyyX4IcNoeK4mJvIItNuONumhPLqi64T8NDjJkxBj4Pq61rvMkJx/9eZ8alzE4I8vYKOLxT0FvRuQ==
-  dependencies:
-    ember-cli-babel "^7.22.1"
-
 ember-data@~4.4.0:
   version "4.4.1"
   resolved "https://registry.yarnpkg.com/ember-data/-/ember-data-4.4.1.tgz#86e56d55b49986dff8ae1cc98a740c829e53961e"