diff --git a/addtocalendar.install b/addtocalendar.install
new file mode 100644
index 0000000..a8c9794
--- /dev/null
+++ b/addtocalendar.install
@@ -0,0 +1,16 @@
+<?php
+
+/**
+ * @file
+ * Update hooks, etc.
+ */
+
+/**
+ * #3092765: Re-save addtocalendar field config with new schema.
+ */
+function addtocalendar_update_9200() {
+  $fields = \Drupal::entityTypeManager()->getStorage('field_config')->loadByProperties(['field_type' => 'add_to_calendar_field']);
+  foreach ($fields as $field) {
+    $field->save();
+  }
+}
diff --git a/config/schema/addtocalendar.schema.yml b/config/schema/addtocalendar.schema.yml
index 79781ba..f37146b 100644
--- a/config/schema/addtocalendar.schema.yml
+++ b/config/schema/addtocalendar.schema.yml
@@ -45,15 +45,9 @@ addtocalendar_setting:
       label: 'Static/Tokenized Content'
 
 field.field_settings.add_to_calendar_field:
-  type: mapping
+  type: field.field_settings.boolean
   label: 'Add to calendar field settings'
   mapping:
-    on_label:
-      type: label
-      label: 'On label'
-    off_label:
-      type: label
-      label: 'Off label'
     addtocalendar_show:
       type: integer
       label: 'Show Add to Calendar'
diff --git a/tests/modules/addtocalendar_test/config/install/field.field.node.page.field_addtocalendar.yml b/tests/modules/addtocalendar_test/config/install/field.field.node.page.field_addtocalendar.yml
index 0ac6adf..af29906 100644
--- a/tests/modules/addtocalendar_test/config/install/field.field.node.page.field_addtocalendar.yml
+++ b/tests/modules/addtocalendar_test/config/install/field.field.node.page.field_addtocalendar.yml
@@ -48,7 +48,7 @@ settings:
     data_calendars:
       'Google Calendar': 'Google Calendar'
       Outlook: Outlook
-      iCalendar: 0
-      'Outlook Online': 0
-      'Yahoo! Calendar': 0
+      iCalendar: '0'
+      'Outlook Online': '0'
+      'Yahoo! Calendar': '0'
 field_type: add_to_calendar_field
diff --git a/tests/src/Functional/AddToCalendarTest.php b/tests/src/Functional/AddToCalendarTest.php
index 415656c..c807642 100644
--- a/tests/src/Functional/AddToCalendarTest.php
+++ b/tests/src/Functional/AddToCalendarTest.php
@@ -11,8 +11,6 @@ use Drupal\Tests\BrowserTestBase;
  */
 class AddToCalendarTest extends BrowserTestBase {
 
-  protected $strictConfigSchema = FALSE;
-
   /**
    * {@inheritdoc}
    */