diff --git a/addons/api/tests/unit/serializers/host-catalog-test.js b/addons/api/tests/unit/serializers/host-catalog-test.js
index e56024cd6..72437ee60 100644
--- a/addons/api/tests/unit/serializers/host-catalog-test.js
+++ b/addons/api/tests/unit/serializers/host-catalog-test.js
@@ -113,4 +113,83 @@ module('Unit | Serializer | host catalog', function (hooks) {
     };
     assert.deepEqual(serializedRecord, expectedResult);
   });
+
+  test('it serializes aws correctly on update', function (assert) {
+    assert.expect(1);
+    const store = this.owner.lookup('service:store');
+    const serializer = store.serializerFor('host-catalog');
+    store.push({
+      data: {
+        id: '1',
+        type: 'host-catalog',
+        attributes: {
+          type: 'plugin',
+          name: 'aws',
+          description: 'test description',
+          plugin: {
+            name: 'aws',
+          },
+          region: 'andorra',
+          access_key_id: 'foobars',
+          secret_access_key: 'testing',
+        },
+      },
+    });
+    const record = store.peekRecord('host-catalog', '1');
+    const snapshot = record._createSnapshot();
+    const expectedResult = {
+      type: 'plugin',
+      name: 'aws',
+      description: 'test description',
+      attributes: {
+        disable_credential_rotation: false,
+        region: 'andorra',
+        access_key_id: 'foobars',
+        secret_access_key: 'testing',
+      },
+    };
+    const serializedRecord = serializer.serialize(snapshot);
+    assert.deepEqual(serializedRecord, expectedResult);
+  });
+
+  test('it serializes azure correctly on update', function (assert) {
+    assert.expect(1);
+    const store = this.owner.lookup('service:store');
+    const serializer = store.serializerFor('host-catalog');
+    store.push({
+      data: {
+        id: '2',
+        type: 'host-catalog',
+        attributes: {
+          type: 'plugin',
+          name: 'azure',
+          description: 'test description',
+          plugin: {
+            name: 'azure',
+          },
+          tenant_id: 'a1b2c3',
+          client_id: 'foobars12',
+          subscription_id: 'barsfoo21',
+          // these are Azure read-only fields and should NOT be included on update
+          secret_id: 'secretBar12',
+          secret_value: 'secretValue21',
+        },
+      },
+    });
+    const record = store.peekRecord('host-catalog', '2');
+    const snapshot = record._createSnapshot();
+    const expectedResult = {
+      type: 'plugin',
+      name: 'azure',
+      description: 'test description',
+      attributes: {
+        disable_credential_rotation: false,
+        tenant_id: 'a1b2c3',
+        client_id: 'foobars12',
+        subscription_id: 'barsfoo21',
+      },
+    };
+    const serializedRecord = serializer.serialize(snapshot);
+    assert.deepEqual(serializedRecord, expectedResult);
+  });
 });