diff --git a/.travis.yml b/.travis.yml
index 3fdf0a39..d38ca0f7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,9 @@
 language: php
 
 php:
-  - 7.1
-  - 7.2
+  - '7.1'
+  - '7.2'
+  - '7.3'
 
 sudo: required
 
@@ -19,13 +20,16 @@ env:
     - SITE_DIR="$HOME/build/testing_site"
   matrix:
     - TEST=PHP_CodeSniffer
-    - TEST=8.5.x
     - TEST=8.6.x
+    - TEST=8.7.x
+    - TEST=8.8.x
 
 matrix:
   fast_finish: true
   exclude:
-    - php: 7.2
+    - php: '7.2'
+      env: TEST=PHP_CodeSniffer
+    - php: '7.3'
       env: TEST=PHP_CodeSniffer
 
 before_install:
diff --git a/modules/rdf_taxonomy/rdf_taxonomy.install b/modules/rdf_taxonomy/rdf_taxonomy.install
index 54769503..8b5e75da 100644
--- a/modules/rdf_taxonomy/rdf_taxonomy.install
+++ b/modules/rdf_taxonomy/rdf_taxonomy.install
@@ -5,6 +5,12 @@
  * Install rdf taxonomy.
  */
 
+use Drupal\Core\Field\BaseFieldDefinition;
+use Drupal\Core\StringTranslation\TranslatableMarkup;
+use Drupal\rdf_taxonomy\Entity\RdfTerm;
+use Drupal\rdf_taxonomy\RdfTaxonomyTermListBuilder;
+use Drupal\rdf_taxonomy\TermRdfStorage;
+
 /**
  * Implements hook_install().
  */
@@ -14,4 +20,92 @@ function rdf_taxonomy_install() {
   $config = \Drupal::service('config.factory')->getEditable('taxonomy.settings');
   $config->set('maintain_index_table', 0);
   $config->save();
+
+  // Remove revision fields created by taxonomy.module.
+  $definition_update_manager = \Drupal::entityDefinitionUpdateManager();
+  /** @var \Drupal\Core\Entity\EntityLastInstalledSchemaRepositoryInterface $last_installed_schema_repository */
+  $last_installed_schema_repository = \Drupal::service('entity.last_installed_schema.repository');
+
+  $field_storage_definitions = $last_installed_schema_repository->getLastInstalledFieldStorageDefinitions('taxonomy_term');
+  foreach (['revision_created', 'revision_user', 'revision_log_message'] as $field_name) {
+    // This check is just to ensure Drupal 8.6.x compatibility as those fields
+    // were added in Drupal 8.7.x.
+    // @todo Drop Drupal 8.6.x support in #92.
+    // @see https://github.com/ec-europa/rdf_entity/issues/92
+    if (isset($field_storage_definitions[$field_name])) {
+      $definition_update_manager->uninstallFieldStorageDefinition($field_storage_definitions[$field_name]);
+    }
+  }
+
+  // Install the 'graph' field definition. The field is not installed when the
+  // module is enabled because the 'taxonomy_term' entity type definition is
+  // installed earlier, when the taxonomy.module is installed. Thus, we'll have
+  // need explicitly install the field to entity type field storage definition.
+  $graph_field_definition = BaseFieldDefinition::create('entity_reference')
+    ->setName('graph')
+    ->setLabel(t('The graph where the entity is stored.'))
+    ->setTargetEntityTypeId('taxonomy_term')
+    ->setTargetBundle(NULL)
+    ->setCustomStorage(TRUE)
+    ->setSetting('target_type', 'rdf_entity_graph');
+  $definition_update_manager->installFieldStorageDefinition('graph', 'taxonomy_term', 'rdf_taxonomy', $graph_field_definition);
+}
+
+/**
+ * Install the 'taxonomy_term' entity type definition changes.
+ */
+function rdf_taxonomy_update_8001() {
+  $definition_update_manager = \Drupal::entityDefinitionUpdateManager();
+
+  // Install entity type alters.
+  $entity_type = $definition_update_manager->getEntityType('taxonomy_term')
+    ->setClass(RdfTerm::class)
+    ->setStorageClass(TermRdfStorage::class)
+    ->setHandlerClass('views_data', NULL)
+    ->setHandlerClass('list_builder', RdfTaxonomyTermListBuilder::class);
+  $definition_update_manager->updateEntityType($entity_type);
+
+  // Install missed fields definitions.
+  $definitions = [
+    'graph' => BaseFieldDefinition::create('entity_reference')
+      ->setName('graph')
+      ->setLabel(t('The graph where the entity is stored.'))
+      ->setTargetEntityTypeId('taxonomy_term')
+      ->setTargetBundle(NULL)
+      ->setCustomStorage(TRUE)
+      ->setSetting('target_type', 'rdf_entity_graph'),
+    'revision_id' => BaseFieldDefinition::create('integer')
+      ->setName('revision_id')
+      ->setTargetEntityTypeId('taxonomy_term')
+      ->setTargetBundle(NULL)
+      ->setLabel(new TranslatableMarkup('Revision ID'))
+      ->setReadOnly(TRUE)
+      ->setCustomStorage(TRUE)
+      ->setSetting('unsigned', TRUE),
+    'revision_default' => BaseFieldDefinition::create('boolean')
+      ->setName('revision_default')
+      ->setTargetEntityTypeId('taxonomy_term')
+      ->setTargetBundle(NULL)
+      ->setLabel(new TranslatableMarkup('Default revision'))
+      ->setDescription(new TranslatableMarkup('A flag indicating whether this was a default revision when it was saved.'))
+      ->setStorageRequired(TRUE)
+      ->setInternal(TRUE)
+      ->setTranslatable(FALSE)
+      ->setCustomStorage(TRUE)
+      ->setRevisionable(TRUE),
+    'revision_translation_affected' => BaseFieldDefinition::create('boolean')
+      ->setName('revision_translation_affected')
+      ->setTargetEntityTypeId('taxonomy_term')
+      ->setTargetBundle(NULL)
+      ->setLabel(new TranslatableMarkup('Revision translation affected'))
+      ->setDescription(new TranslatableMarkup('Indicates if the last edit of a translation belongs to current revision.'))
+      ->setReadOnly(TRUE)
+      ->setRevisionable(TRUE)
+      ->setCustomStorage(TRUE)
+      ->setTranslatable(TRUE),
+  ];
+  foreach ($definitions as $field_name => $definition) {
+    $definition_update_manager->installFieldStorageDefinition($field_name, 'taxonomy_term', 'rdf_taxonomy', $definition);
+  }
+
 }
diff --git a/modules/rdf_taxonomy/src/Entity/RdfTerm.php b/modules/rdf_taxonomy/src/Entity/RdfTerm.php
index a08f993e..4daa4cbb 100644
--- a/modules/rdf_taxonomy/src/Entity/RdfTerm.php
+++ b/modules/rdf_taxonomy/src/Entity/RdfTerm.php
@@ -15,10 +15,17 @@ class RdfTerm extends Term {
    */
   public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
     $base_fields = parent::baseFieldDefinitions($entity_type);
-    // Support also Drupal 8.5.x.
-    if (isset($base_fields['status'])) {
-      $base_fields['status']->setCustomStorage(TRUE);
-    }
+    $base_fields['status']->setCustomStorage(TRUE);
+
+    // Don't support taxonomy term revisions.
+    unset(
+      $base_fields['revision_default'],
+      $base_fields['revision_translation_affected'],
+      $base_fields['revision_created'],
+      $base_fields['revision_user'],
+      $base_fields['revision_log_message']
+    );
+
     return $base_fields;
   }
 
diff --git a/modules/rdf_taxonomy/src/TermRdfStorage.php b/modules/rdf_taxonomy/src/TermRdfStorage.php
index 334abfd2..082aee92 100644
--- a/modules/rdf_taxonomy/src/TermRdfStorage.php
+++ b/modules/rdf_taxonomy/src/TermRdfStorage.php
@@ -9,6 +9,7 @@
 use Drupal\rdf_entity\Entity\RdfEntitySparqlStorage;
 use Drupal\taxonomy\TermInterface;
 use Drupal\taxonomy\TermStorageInterface;
+use Drupal\taxonomy\VocabularyInterface;
 use EasyRdf\Graph;
 
 /**
@@ -416,6 +417,20 @@ public function getNodeTerms(array $nids, array $vocabs = [], $langcode = NULL)
     return $terms;
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function getVocabularyHierarchyType($vid) {
+    return VocabularyInterface::HIERARCHY_SINGLE;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getTermIdsWithPendingRevisions() {
+    return [];
+  }
+
   /**
    * {@inheritdoc}
    */
diff --git a/rdf_entity.install b/rdf_entity.install
index fc5debac..22615bfd 100644
--- a/rdf_entity.install
+++ b/rdf_entity.install
@@ -5,6 +5,7 @@
  * Includes installation functions for the rdf_entity module.
  */
 
+use Drupal\Core\Field\BaseFieldDefinition;
 use Drupal\Core\Serialization\Yaml;
 use Drupal\rdf_entity\Entity\RdfEntityGraph;
 use Drupal\rdf_entity\Entity\RdfEntityMapping;
@@ -93,3 +94,18 @@ function rdf_entity_update_8002() {
     $entity_definition_update_manager->installEntityType($entity_type);
   }
 }
+
+/**
+ * Install the 'rdf_entity' entity type definition changes.
+ */
+function rdf_entity_update_8003() {
+  $definition_update_manager = \Drupal::entityDefinitionUpdateManager();
+  $graph_field_definition = BaseFieldDefinition::create('entity_reference')
+    ->setName('graph')
+    ->setLabel(t('The graph where the entity is stored.'))
+    ->setTargetEntityTypeId('rdf_entity')
+    ->setTargetBundle(NULL)
+    ->setCustomStorage(TRUE)
+    ->setSetting('target_type', 'rdf_entity_graph');
+  $definition_update_manager->installFieldStorageDefinition('graph', 'rdf_entity', 'rdf_entity', $graph_field_definition);
+}
diff --git a/rdf_entity.module b/rdf_entity.module
index 19fb0438..56218eda 100755
--- a/rdf_entity.module
+++ b/rdf_entity.module
@@ -36,7 +36,7 @@ function rdf_entity_entity_base_field_info_alter(array &$fields, EntityTypeInter
 
   $fields['graph'] = BaseFieldDefinition::create('entity_reference')
     ->setLabel(t('The graph where the entity is stored.'))
-    ->setTargetEntityTypeId('rdf_entity')
+    ->setTargetEntityTypeId($entity_type->id())
     ->setName('graph')
     ->setCustomStorage(TRUE)
     ->setSetting('target_type', 'rdf_entity_graph');
diff --git a/src/Entity/RdfEntitySparqlStorage.php b/src/Entity/RdfEntitySparqlStorage.php
index c3d14b65..bc91225f 100644
--- a/src/Entity/RdfEntitySparqlStorage.php
+++ b/src/Entity/RdfEntitySparqlStorage.php
@@ -149,8 +149,7 @@ public static function createInstance(ContainerInterface $container, EntityTypeI
       $container->get('sparql.graph_handler'),
       $container->get('sparql.field_handler'),
       $container->get('plugin.manager.rdf_entity.id'),
-      // We support also Drupal 8.5.x.
-      $container->has('entity.memory_cache') ? $container->get('entity.memory_cache') : NULL
+      $container->get('entity.memory_cache')
     );
   }