diff --git a/composer.json b/composer.json
index 0b15c2a..fbaef7d 100644
--- a/composer.json
+++ b/composer.json
@@ -7,6 +7,6 @@
     "wamania/php-stemmer": "^2.0"
   },
   "require-dev": {
-    "drupal/search_api": "^1.17"
+    "drupal/search_api": "^1.30"
   }
 }
diff --git a/src/Plugin/search_api/processor/SnowballStemmer.php b/src/Plugin/search_api/processor/SnowballStemmer.php
index 97ce771..7c0e59f 100644
--- a/src/Plugin/search_api/processor/SnowballStemmer.php
+++ b/src/Plugin/search_api/processor/SnowballStemmer.php
@@ -93,29 +93,6 @@ class SnowballStemmer extends StemmerProcessor {
     return $this;
   }
 
-  /**
-   * Retrieves the language manager.
-   *
-   * @return \Drupal\Core\Language\LanguageInterface
-   *   The language manager.
-   */
-  public function getLanguageManager() {
-    return $this->languageManager ?: \Drupal::service('language_manager');
-  }
-
-  /**
-   * Sets the language manager.
-   *
-   * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
-   *   The language manager.
-   *
-   * @return $this
-   */
-  public function setLanguageManager(LanguageManagerInterface $language_manager) {
-    $this->languageManager = $language_manager;
-    return $this;
-  }
-
   /**
    * {@inheritdoc}
    */