diff --git a/core/includes/common.inc b/core/includes/common.inc
index d37a8db79d..1dadee7eef 100644
--- a/core/includes/common.inc
+++ b/core/includes/common.inc
@@ -1214,12 +1214,14 @@ function debug($data, $label = NULL, $print_r = TRUE) {
  *   NULL if compatible, otherwise the original dependency version string that
  *   caused the incompatibility.
  *
- * @see \Drupal\Core\Extension\VersionChecker::checkIncompatibility
- *
  * @deprecated in Drupal 8.6.0 and will be removed before Drupal 9.0.0. Use
  *   \Drupal\Core\Extension\ModuleHandler::checkIncompatibility() instead.
+ *
+ * @see \Drupal\Core\Extension\VersionChecker::checkIncompatibility
+ * @see https://www.drupal.org/node/2756875
  */
 function drupal_check_incompatibility($v, $current_version) {
+  @trigger_error(__FUNCTION__ . ' is deprecated. Use \Drupal\Core\Extension\ModuleHandler::checkIncompatibility() instead. https://www.drupal.org/node/2756875', E_USER_DEPRECATED);
   return VersionChecker::checkIncompatibility($v, $current_version);
 }
 
diff --git a/core/lib/Drupal/Core/Extension/ModuleExtensionList.php b/core/lib/Drupal/Core/Extension/ModuleExtensionList.php
index 01fcf59095..6b4e00740b 100644
--- a/core/lib/Drupal/Core/Extension/ModuleExtensionList.php
+++ b/core/lib/Drupal/Core/Extension/ModuleExtensionList.php
@@ -214,7 +214,7 @@ protected function getInstalledExtensionNames() {
   protected function ensureRequiredDependencies(Extension $module, array $modules = []) {
     if (!empty($module->info['required'])) {
       foreach ($module->info['dependencies'] as $dependency) {
-        $dependency_name = ModuleHandler::parseDependency($dependency)['name'];
+        $dependency_name = VersionChecker::parseDependency($dependency)['name'];
         if (!isset($modules[$dependency_name]->info['required'])) {
           $modules[$dependency_name]->info['required'] = TRUE;
           $modules[$dependency_name]->info['explanation'] = $this->t('Dependency of required module @module', ['@module' => $module->info['name']]);
diff --git a/core/lib/Drupal/Core/Extension/ModuleHandler.php b/core/lib/Drupal/Core/Extension/ModuleHandler.php
index 3097304bf1..56c8b5de1d 100644
--- a/core/lib/Drupal/Core/Extension/ModuleHandler.php
+++ b/core/lib/Drupal/Core/Extension/ModuleHandler.php
@@ -719,8 +719,11 @@ protected function verifyImplementations(&$implementations, $hook) {
    *
    * @deprecated in Drupal 8.6.0, will be removed before Drupal 9.0.0.
    *   Use \Drupal\Core\Extension\VersionChecker::parseDependency() instead.
+   *
+   * @see https://www.drupal.org/node/2756875
    */
   public static function parseDependency($dependency) {
+    @trigger_error(__METHOD__ . ' is deprecated. Use \Drupal\Core\Extension\VersionChecker::parseDependency() instead. https://www.drupal.org/node/2756875', E_USER_DEPRECATED);
     return VersionChecker::parseDependency($dependency);
   }
 
diff --git a/core/tests/Drupal/Tests/Core/Extension/DeprecatedModuleHandlerTest.php b/core/tests/Drupal/Tests/Core/Extension/DeprecatedModuleHandlerTest.php
new file mode 100644
index 0000000000..82d9f82542
--- /dev/null
+++ b/core/tests/Drupal/Tests/Core/Extension/DeprecatedModuleHandlerTest.php
@@ -0,0 +1,51 @@
+<?php
+
+namespace Drupal\Tests\Core\Extension;
+
+use Drupal\Core\Extension\ModuleHandler;
+use Drupal\Tests\UnitTestCase;
+
+/**
+ * @coversDefaultClass \Drupal\Core\Extension\ModuleHandler
+ * @runTestsInSeparateProcesses
+ *
+ * @group Extension
+ * @group legacy
+ */
+class DeprecatedModuleHandlerTest extends UnitTestCase {
+
+  /**
+   * @dataProvider dependencyProvider
+   * @covers ::parseDependency
+   * @expectedDeprecation Drupal\Core\Extension\ModuleHandler::parseDependency is deprecated. Use \Drupal\Core\Extension\VersionChecker::parseDependency() instead. https://www.drupal.org/node/2756875
+   */
+  public function testDependencyParsing($dependency, $expected) {
+    $version = ModuleHandler::parseDependency($dependency);
+    $this->assertEquals($expected, $version);
+  }
+
+  /**
+   * Provider for testing dependency parsing.
+   */
+  public function dependencyProvider() {
+    return [
+      ['system', ['name' => 'system']],
+      ['taxonomy', ['name' => 'taxonomy']],
+      ['views', ['name' => 'views']],
+      ['views_ui(8.x-1.0)', ['name' => 'views_ui', 'original_version' => ' (8.x-1.0)', 'versions' => [['op' => '=', 'version' => '1.0']]]],
+      // Not supported?.
+      // array('views_ui(8.x-1.1-beta)', array('name' => 'views_ui', 'original_version' => ' (8.x-1.1-beta)', 'versions' => array(array('op' => '=', 'version' => '1.1-beta')))),
+      ['views_ui(8.x-1.1-alpha12)', ['name' => 'views_ui', 'original_version' => ' (8.x-1.1-alpha12)', 'versions' => [['op' => '=', 'version' => '1.1-alpha12']]]],
+      ['views_ui(8.x-1.1-beta8)', ['name' => 'views_ui', 'original_version' => ' (8.x-1.1-beta8)', 'versions' => [['op' => '=', 'version' => '1.1-beta8']]]],
+      ['views_ui(8.x-1.1-rc11)', ['name' => 'views_ui', 'original_version' => ' (8.x-1.1-rc11)', 'versions' => [['op' => '=', 'version' => '1.1-rc11']]]],
+      ['views_ui(8.x-1.12)', ['name' => 'views_ui', 'original_version' => ' (8.x-1.12)', 'versions' => [['op' => '=', 'version' => '1.12']]]],
+      ['views_ui(8.x-1.x)', ['name' => 'views_ui', 'original_version' => ' (8.x-1.x)', 'versions' => [['op' => '<', 'version' => '2.x'], ['op' => '>=', 'version' => '1.x']]]],
+      ['views_ui( <= 8.x-1.x)', ['name' => 'views_ui', 'original_version' => ' ( <= 8.x-1.x)', 'versions' => [['op' => '<=', 'version' => '2.x']]]],
+      ['views_ui(<= 8.x-1.x)', ['name' => 'views_ui', 'original_version' => ' (<= 8.x-1.x)', 'versions' => [['op' => '<=', 'version' => '2.x']]]],
+      ['views_ui( <=8.x-1.x)', ['name' => 'views_ui', 'original_version' => ' ( <=8.x-1.x)', 'versions' => [['op' => '<=', 'version' => '2.x']]]],
+      ['views_ui(>8.x-1.x)', ['name' => 'views_ui', 'original_version' => ' (>8.x-1.x)', 'versions' => [['op' => '>', 'version' => '2.x']]]],
+      ['drupal:views_ui(>8.x-1.x)', ['project' => 'drupal', 'name' => 'views_ui', 'original_version' => ' (>8.x-1.x)', 'versions' => [['op' => '>', 'version' => '2.x']]]],
+    ];
+  }
+
+}
diff --git a/core/tests/Drupal/Tests/Core/Extension/ModuleHandlerTest.php b/core/tests/Drupal/Tests/Core/Extension/ModuleHandlerTest.php
index 4fda0022b7..66a0573090 100644
--- a/core/tests/Drupal/Tests/Core/Extension/ModuleHandlerTest.php
+++ b/core/tests/Drupal/Tests/Core/Extension/ModuleHandlerTest.php
@@ -495,39 +495,6 @@ public function testResetImplementations() {
     $module_handler->getImplementations('hook');
   }
 
-  /**
-   * @dataProvider dependencyProvider
-   * @covers ::parseDependency
-   */
-  public function testDependencyParsing($dependency, $expected) {
-    $version = ModuleHandler::parseDependency($dependency);
-    $this->assertEquals($expected, $version);
-  }
-
-  /**
-   * Provider for testing dependency parsing.
-   */
-  public function dependencyProvider() {
-    return [
-      ['system', ['name' => 'system']],
-      ['taxonomy', ['name' => 'taxonomy']],
-      ['views', ['name' => 'views']],
-      ['views_ui(8.x-1.0)', ['name' => 'views_ui', 'original_version' => ' (8.x-1.0)', 'versions' => [['op' => '=', 'version' => '1.0']]]],
-      // Not supported?.
-      // array('views_ui(8.x-1.1-beta)', array('name' => 'views_ui', 'original_version' => ' (8.x-1.1-beta)', 'versions' => array(array('op' => '=', 'version' => '1.1-beta')))),
-      ['views_ui(8.x-1.1-alpha12)', ['name' => 'views_ui', 'original_version' => ' (8.x-1.1-alpha12)', 'versions' => [['op' => '=', 'version' => '1.1-alpha12']]]],
-      ['views_ui(8.x-1.1-beta8)', ['name' => 'views_ui', 'original_version' => ' (8.x-1.1-beta8)', 'versions' => [['op' => '=', 'version' => '1.1-beta8']]]],
-      ['views_ui(8.x-1.1-rc11)', ['name' => 'views_ui', 'original_version' => ' (8.x-1.1-rc11)', 'versions' => [['op' => '=', 'version' => '1.1-rc11']]]],
-      ['views_ui(8.x-1.12)', ['name' => 'views_ui', 'original_version' => ' (8.x-1.12)', 'versions' => [['op' => '=', 'version' => '1.12']]]],
-      ['views_ui(8.x-1.x)', ['name' => 'views_ui', 'original_version' => ' (8.x-1.x)', 'versions' => [['op' => '<', 'version' => '2.x'], ['op' => '>=', 'version' => '1.x']]]],
-      ['views_ui( <= 8.x-1.x)', ['name' => 'views_ui', 'original_version' => ' ( <= 8.x-1.x)', 'versions' => [['op' => '<=', 'version' => '2.x']]]],
-      ['views_ui(<= 8.x-1.x)', ['name' => 'views_ui', 'original_version' => ' (<= 8.x-1.x)', 'versions' => [['op' => '<=', 'version' => '2.x']]]],
-      ['views_ui( <=8.x-1.x)', ['name' => 'views_ui', 'original_version' => ' ( <=8.x-1.x)', 'versions' => [['op' => '<=', 'version' => '2.x']]]],
-      ['views_ui(>8.x-1.x)', ['name' => 'views_ui', 'original_version' => ' (>8.x-1.x)', 'versions' => [['op' => '>', 'version' => '2.x']]]],
-      ['drupal:views_ui(>8.x-1.x)', ['project' => 'drupal', 'name' => 'views_ui', 'original_version' => ' (>8.x-1.x)', 'versions' => [['op' => '>', 'version' => '2.x']]]],
-    ];
-  }
-
   /**
    * @covers ::getModuleDirectories
    */