diff --git a/core/modules/image/image.post_update.php b/core/modules/image/image.post_update.php
index 04d8c4b7b9..c5db868b75 100644
--- a/core/modules/image/image.post_update.php
+++ b/core/modules/image/image.post_update.php
@@ -7,6 +7,7 @@
 
 use Drupal\Core\Entity\Entity\EntityViewDisplay;
 use Drupal\Core\Entity\Entity\EntityFormDisplay;
+use Drupal\image\Entity\ImageStyle;
 
 /**
  * Saves the image style dependencies into form and view display entities.
@@ -20,3 +21,26 @@ function image_post_update_image_style_dependencies() {
     $display->save();
   }
 }
+
+/**
+ * @addtogroup updates-8.6.0
+ * @{
+ */
+
+/**
+ * Add 'anchor' setting to 'Scale and crop' effects.
+ */
+function image_post_update_scale_and_crop_effect_add_anchor() {
+  foreach (ImageStyle::loadMultiple() as $image_style) {
+    foreach ($image_style->getEffects() as $effect) {
+      if ($effect->getPluginId() === 'image_scale_and_crop') {
+        $image_style->save();
+        break;
+      }
+    }
+  }
+}
+
+/**
+ * @} End of "addtogroup updates-8.6.0".
+ */
diff --git a/core/modules/image/src/Tests/Update/ScaleAndCropAddAnchorUpdateTest.php b/core/modules/image/src/Tests/Update/ScaleAndCropAddAnchorUpdateTest.php
new file mode 100644
index 0000000000..cbef409266
--- /dev/null
+++ b/core/modules/image/src/Tests/Update/ScaleAndCropAddAnchorUpdateTest.php
@@ -0,0 +1,59 @@
+<?php
+
+namespace Drupal\image\Tests\Update;
+
+use Drupal\FunctionalTests\Update\UpdatePathTestBase;
+
+/**
+ * Tests adding an 'anchor' setting to existing scale and crop image effects.
+ *
+ * @see image_post_update_scale_and_crop_effect_add_anchor()
+ *
+ * @group Update
+ */
+class ScaleAndCropAddAnchorUpdateTest extends UpdatePathTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setDatabaseDumpFiles() {
+    $this->databaseDumpFiles = [
+      __DIR__ . '/../../../../system/tests/fixtures/update/drupal-8.4.0.bare.standard.php.gz',
+      __DIR__ . '/../../../tests/fixtures/update/test_scale_and_crop_add_anchor.php',
+    ];
+  }
+
+  /**
+   * Tests that 'anchor' setting is properly added.
+   */
+  public function testImagePostUpdateScaleAndCropEffectAddAnchor() {
+    // Test that the first effect does not have an 'anchor' setting.
+    $effect_data = $this->config('image.style.test_scale_and_crop_add_anchor')->get('effects.8c7170c9-5bcc-40f9-8698-f88a8be6d434.data');
+    $this->assertFalse(array_key_exists('anchor', $effect_data));
+
+    // Test that the second effect has an 'anchor' setting.
+    $effect_data = $this->config('image.style.test_scale_and_crop_add_anchor')->get('effects.a8d83b12-abc6-40c8-9c2f-78a4e421cf97.data');
+    $this->assertTrue(array_key_exists('anchor', $effect_data));
+
+    // Test that the third effect does not have an 'anchor' setting.
+    $effect_data = $this->config('image.style.test_scale_and_crop_add_anchor')->get('effects.1bffd475-19d0-439a-b6a1-7e5850ce40f9.data');
+    $this->assertFalse(array_key_exists('anchor', $effect_data));
+
+    $this->runUpdates();
+
+    // Test that the first effect now has an 'anchor' setting.
+    $effect_data = $this->config('image.style.test_scale_and_crop_add_anchor')->get('effects.8c7170c9-5bcc-40f9-8698-f88a8be6d434.data');
+    $this->assertTrue(array_key_exists('anchor', $effect_data));
+    $this->assertEquals('center-center', $effect_data['anchor']);
+
+    // Test that the second effect's 'anchor' setting is unchanged.
+    $effect_data = $this->config('image.style.test_scale_and_crop_add_anchor')->get('effects.a8d83b12-abc6-40c8-9c2f-78a4e421cf97.data');
+    $this->assertTrue(array_key_exists('anchor', $effect_data));
+    $this->assertEquals('left-top', $effect_data['anchor']);
+
+    // Test that the third effect still does not have an 'anchor' setting.
+    $effect_data = $this->config('image.style.test_scale_and_crop_add_anchor')->get('effects.1bffd475-19d0-439a-b6a1-7e5850ce40f9.data');
+    $this->assertFalse(array_key_exists('anchor', $effect_data));
+  }
+
+}
diff --git a/core/modules/image/tests/fixtures/update/image.image_style.test_scale_and_crop_add_anchor.yml b/core/modules/image/tests/fixtures/update/image.image_style.test_scale_and_crop_add_anchor.yml
new file mode 100644
index 0000000000..b8dd8db666
--- /dev/null
+++ b/core/modules/image/tests/fixtures/update/image.image_style.test_scale_and_crop_add_anchor.yml
@@ -0,0 +1,28 @@
+langcode: en
+status: true
+name: test_scale_and_crop_add_anchor
+label: test_scale_and_crop_add_anchor
+effects:
+  8c7170c9-5bcc-40f9-8698-f88a8be6d434:
+    uuid: 8c7170c9-5bcc-40f9-8698-f88a8be6d434
+    id: image_scale_and_crop
+    weight: 1
+    data:
+      width: 100
+      height: 100
+  a8d83b12-abc6-40c8-9c2f-78a4e421cf97:
+    uuid: a8d83b12-abc6-40c8-9c2f-78a4e421cf97
+    id: image_scale_and_crop
+    weight: 2
+    data:
+      width: 100
+      height: 100
+      anchor: left-top
+  1bffd475-19d0-439a-b6a1-7e5850ce40f9:
+    uuid: 1bffd475-19d0-439a-b6a1-7e5850ce40f9
+    id: image_rotate
+    weight: 3
+    data:
+      degrees: 180
+      bgcolor: ''
+      random: false
diff --git a/core/modules/image/tests/fixtures/update/test_scale_and_crop_add_anchor.php b/core/modules/image/tests/fixtures/update/test_scale_and_crop_add_anchor.php
new file mode 100644
index 0000000000..a215f55ea8
--- /dev/null
+++ b/core/modules/image/tests/fixtures/update/test_scale_and_crop_add_anchor.php
@@ -0,0 +1,19 @@
+<?php
+
+/**
+ * @file
+ * Test fixture.
+ */
+
+use Drupal\Core\Database\Database;
+use Drupal\Core\Serialization\Yaml;
+
+$connection = Database::getConnection();
+
+$connection->insert('config')
+  ->fields(array(
+    'collection' => '',
+    'name' => 'image.style.test_scale_and_crop_add_anchor',
+    'data' => serialize(Yaml::decode(file_get_contents('core/modules/image/tests/fixtures/update/image.image_style.test_scale_and_crop_add_anchor.yml'))),
+  ))
+  ->execute();