diff --git a/modules/search_api_views_taxonomy/search_api_views_taxonomy.install b/modules/search_api_views_taxonomy/search_api_views_taxonomy.install
new file mode 100644
index 00000000..da2a96fd
--- /dev/null
+++ b/modules/search_api_views_taxonomy/search_api_views_taxonomy.install
@@ -0,0 +1,24 @@
+<?php
+
+/**
+ * @file
+ * Install, update and uninstall functions for the Search API Taxonomy Term Handlers module.
+ */
+
+use Drupal\Core\Url;
+
+/**
+ * Implements hook_requirements().
+ */
+function search_api_views_taxonomy_requirements() {
+  $requirements['search_api_views_taxonomy'] = [
+    'title' => t('Search API Taxonomy Term Handlers'),
+    'value' => t('out-dated'),
+    'description' => t('All functionality of the "Search API Taxonomy Term Handlers" module has been moved into the Search API module. You should <a href=":uninstall">uninstall this module</a>.', [
+      ':uninstall' => Url::fromRoute('system.modules_uninstall')->toString(),
+    ]),
+    'severity' => REQUIREMENT_WARNING,
+  ];
+
+  return;
+}
diff --git a/src/Plugin/views/argument/SearchApiTerm.php b/src/Plugin/views/argument/SearchApiTerm.php
index 06618488..8a1ea8e8 100644
--- a/src/Plugin/views/argument/SearchApiTerm.php
+++ b/src/Plugin/views/argument/SearchApiTerm.php
@@ -8,6 +8,10 @@
 /**
  * Defines a contextual filter searching through all indexed taxonomy fields.
  *
+ * Note: The plugin annotation below is not misspelled. Due to dependency
+ * problems, the plugin is not defined here but in
+ * search_api_views_plugins_argument_alter().
+ *
  * @ingroup views_argument_handlers
  *
  * ViewsArgument("search_api_term")
diff --git a/src/Plugin/views/filter/SearchApiTerm.php b/src/Plugin/views/filter/SearchApiTerm.php
index 88f4f826..93d65f06 100644
--- a/src/Plugin/views/filter/SearchApiTerm.php
+++ b/src/Plugin/views/filter/SearchApiTerm.php
@@ -7,6 +7,10 @@
 /**
  * Defines a filter for filtering on taxonomy term references.
  *
+ * Note: The plugin annotation below is not misspelled. Due to dependency
+ * problems, the plugin is not defined here but in
+ * search_api_views_plugins_filter_alter().
+ *
  * @ingroup views_filter_handlers
  *
  * ViewsFilter("search_api_term")