diff --git a/composer.json b/composer.json
index 7706ec74..34107d37 100644
--- a/composer.json
+++ b/composer.json
@@ -39,7 +39,8 @@
     "sebastian/phpcpd": "*"
   },
   "suggest": {
-    "drupal/transliterate_filenames": "Sanitizes filenames when they are uploaded so they don't break your repository."
+    "drupal/transliterate_filenames": "Sanitizes filenames when they are uploaded so they don't break your repository.",
+    "drupal/coi": "Some configuration fields work with Config Override Inspector."
   },
   "license": "GPL-2.0-or-later",
   "authors": [
diff --git a/modules/islandora_iiif/src/Form/IslandoraIIIFConfigForm.php b/modules/islandora_iiif/src/Form/IslandoraIIIFConfigForm.php
index f09a0143..a99539a3 100644
--- a/modules/islandora_iiif/src/Form/IslandoraIIIFConfigForm.php
+++ b/modules/islandora_iiif/src/Form/IslandoraIIIFConfigForm.php
@@ -72,6 +72,9 @@ class IslandoraIIIFConfigForm extends ConfigFormBase {
       '#title' => $this->t('IIIF Image server location'),
       '#description' => $this->t('Please enter the image server location without trailing slash. e.g. http://www.example.org/iiif/2.'),
       '#default_value' => $config->get('iiif_server'),
+      '#config' => [
+        'key' => 'islandora_iiif.settings:iiif_server',
+      ],
     ];
 
     $form['use_relative_paths'] = [
diff --git a/src/Form/IslandoraSettingsForm.php b/src/Form/IslandoraSettingsForm.php
index 6a2662f9..ad4c83b3 100644
--- a/src/Form/IslandoraSettingsForm.php
+++ b/src/Form/IslandoraSettingsForm.php
@@ -129,6 +129,9 @@ class IslandoraSettingsForm extends ConfigFormBase {
       '#type' => 'textfield',
       '#title' => $this->t('URL'),
       '#default_value' => $config->get(self::BROKER_URL),
+      '#config' => [
+        'key' => 'islandora.settings:' . self::BROKER_URL,
+      ],
     ];
     $broker_user = $config->get(self::BROKER_USER);
     $form['broker_info']['provide_user_creds'] = [
@@ -149,6 +152,9 @@ class IslandoraSettingsForm extends ConfigFormBase {
           $state_selector => ['checked' => TRUE],
         ],
       ],
+      '#config' => [
+        'key' => 'islandora.settings:' . self::BROKER_USER,
+      ],
     ];
     $form['broker_info'][self::BROKER_PASSWORD] = [
       '#type' => 'password',
@@ -159,6 +165,10 @@ class IslandoraSettingsForm extends ConfigFormBase {
           $state_selector => ['checked' => TRUE],
         ],
       ],
+      '#config' => [
+        'key' => 'islandora.settings:' . self::BROKER_PASSWORD,
+        'secret' => TRUE,
+      ],
     ];
     $form[self::JWT_EXPIRY] = [
       '#type' => 'textfield',
@@ -221,7 +231,11 @@ class IslandoraSettingsForm extends ConfigFormBase {
     $form[self::FEDORA_URL] = [
       '#type' => 'textfield',
       '#title' => $this->t('Fedora URL'),
-      '#attributes' => ['readonly' => 'readonly'],
+      '#description' => $this->t('Read-only. This value is set in settings.php as the URL for the Fedora flysystem.'),
+      '#attributes' => [
+        'readonly' => 'readonly',
+        'disabled' => 'disabled',
+      ],
       '#default_value' => $fedora_url,
     ];