diff --git a/core/modules/image/image.post_update.php b/core/modules/image/image.post_update.php
index fe41c9f55c..7548ec436a 100644
--- a/core/modules/image/image.post_update.php
+++ b/core/modules/image/image.post_update.php
@@ -30,8 +30,9 @@ function image_post_update_enable_filter_image_style() {
   foreach ($formats as $format => $weight) {
     if ($format = FilterFormat::load($format)) {
       $format->setFilterConfig('filter_image_style', ['status' => TRUE, 'weight' => $weight]);
-      if (($format = $format->filters('filter_html')) && $format->status) {
-        $config = $format->getConfiguration();
+      // Update the allowed html tags of filter_html filter if its enabled.
+      if (($filter = $format->filters('filter_html'))) {
+        $config = $filter->getConfiguration();
         $allowed_html = !empty($config['settings']['allowed_html']) ? $config['settings']['allowed_html'] : NULL;
         $matches = [];
         if ($allowed_html && preg_match('/<img([^>]*)>/', $allowed_html, $matches)) {
@@ -41,6 +42,7 @@ function image_post_update_enable_filter_image_style() {
           $format->setFilterConfig('filter_html', $config);
         }
       }
+      $format->save();
     }
   }
 }
diff --git a/core/modules/image/src/Tests/Update/ImageUpdateTextFormatsTest.php b/core/modules/image/src/Tests/Update/ImageUpdateTextFormatsTest.php
new file mode 100644
index 0000000000..7f01c1f568
--- /dev/null
+++ b/core/modules/image/src/Tests/Update/ImageUpdateTextFormatsTest.php
@@ -0,0 +1,48 @@
+<?php
+
+namespace Drupal\image\Tests\Update;
+
+use Drupal\system\Tests\Update\UpdatePathTestBase;
+
+/**
+ * Tests Image update path.
+ *
+ * @group image
+ */
+class ImageUpdateTextFormatsTest extends UpdatePathTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setDatabaseDumpFiles() {
+    $this->databaseDumpFiles = [
+      __DIR__ . '/../../../../system/tests/fixtures/update/drupal-8.bare.standard.php.gz',
+    ];
+  }
+
+  /**
+   * Tests image_post_update_enable_filter_image_style().
+   *
+   * @see image_post_update_enable_filter_image_style()
+   */
+  public function testPostUpdateFilterImageStyle() {
+    // Check that basic_html and full_html format does not have filter_image_style filter applied.
+    $config_factory = \Drupal::configFactory();
+    $basic_html_data = $config_factory->get('filter.format.basic_html')->get();
+    $this->assertFalse(isset($basic_html_data['filters']['filter_image_style']), 'Prior to running the update the "filter_image_style" filter does not applied to basic_html format.');
+    $full_html_data = $config_factory->get('filter.format.full_html')->get();
+    $this->assertFalse(isset($full_html_data['filters']['filter_image_style']), 'Prior to running the update the "filter_image_style" filter does not applied to full_html format.');
+
+    // Run updates.
+    $this->runUpdates();
+
+    // Check that the filter_format entities have been updated.
+    $config_factory = \Drupal::configFactory();
+    $basic_html_data = $config_factory->get('filter.format.basic_html')->get();
+    $this->assertTrue(isset($basic_html_data['filters']['filter_image_style']), 'After running the update the "filter_image_style" filter applied to basic_html format.');
+    $full_html_data = $config_factory->get('filter.format.full_html')->get();
+    $this->assertTrue(isset($full_html_data['filters']['filter_image_style']), 'After running the update the "filter_image_style" filter applied to full_html format.');
+
+  }
+
+}