diff --git a/replication.install b/replication.install
index 0761ecb..4f4e5e5 100644
--- a/replication.install
+++ b/replication.install
@@ -102,3 +102,52 @@ function replication_update_8100() {
     }
   }
 }
+
+/**
+ * Update ReplicationHistoryItem property definitions.
+ *
+ * For compatibility with CouchDB 2.0.0.
+ */
+function replication_update_8101() {
+  $connection = Database::getConnection();
+  $entity_definition_update_manager = Drupal::entityDefinitionUpdateManager();
+  $entity_type_id = 'replication_log';
+
+  // Check if we have updates for replication_log entity type.
+  if ($entity_definition_update_manager->needsUpdates()) {
+    $changes = $entity_definition_update_manager->getChangeSummary();
+    if (in_array($entity_type_id, array_keys($changes))) {
+      // Set tables to update (history field tables).
+      $tables_to_update = [
+        $entity_type_id . '__history',
+        $entity_type_id . '_revision__history'
+      ];
+
+      $tables_data = [];
+      // Copy content from entity tables.
+      foreach ($tables_to_update as $table_to_update) {
+        $tables_data[$table_to_update] = $connection->select($table_to_update)
+          ->fields($table_to_update)
+          ->execute()->fetchAll();
+        $connection->truncate($table_to_update)->execute();
+      }
+
+      // Apply updates.
+      $storage_definitions = \Drupal::service('entity_field.manager')->getFieldStorageDefinitions($entity_type_id);
+      if ($storage_definitions['history']) {
+        $entity_definition_update_manager->updateFieldStorageDefinition($storage_definitions['history']);
+      }
+
+      // Insert content into updated entity tables.
+      foreach ($tables_data as $table_name => $table_data) {
+        foreach ($table_data as $result) {
+          $data = (array) $result;
+          // Save the information in the table.
+          $connection->insert($table_name)
+            ->fields($data)
+            ->execute();
+        }
+      }
+    }
+  }
+}
diff --git a/src/Plugin/Field/FieldType/ReplicationHistoryItem.php b/src/Plugin/Field/FieldType/ReplicationHistoryItem.php
index d3bd681..096209d 100644
--- a/src/Plugin/Field/FieldType/ReplicationHistoryItem.php
+++ b/src/Plugin/Field/FieldType/ReplicationHistoryItem.php
@@ -43,14 +43,14 @@ class ReplicationHistoryItem extends FieldItemBase {
       ->setDescription(t('Number of documents written.'))
       ->setRequired(FALSE);
 
-    $properties['end_last_seq'] = DataDefinition::create('integer')
-      ->setLabel(t('End sequence'))
-      ->setDescription(t('Sequence ID where the replication ended.'))
+    $properties['start_last_seq'] = DataDefinition::create('string')
+      ->setLabel(t('Start sequence'))
+      ->setDescription(t('Sequence ID where the replication started.'))
       ->setRequired(FALSE);
 
-    $properties['end_time'] = DataDefinition::create('datetime_iso8601')
-      ->setLabel(t('End time'))
-      ->setDescription(t('Date and time when replication ended.'))
+    $properties['end_last_seq'] = DataDefinition::create('string')
+      ->setLabel(t('End sequence'))
+      ->setDescription(t('Sequence ID where the replication ended.'))
       ->setRequired(FALSE);
 
     $properties['missing_checked'] = DataDefinition::create('integer')
@@ -63,7 +63,7 @@ class ReplicationHistoryItem extends FieldItemBase {
       ->setDescription(t('Number of missing documents found.'))
       ->setRequired(FALSE);
 
-    $properties['recorded_seq'] = DataDefinition::create('integer')
+    $properties['recorded_seq'] = DataDefinition::create('string')
       ->setLabel(t('Recorded sequence'))
       ->setDescription(t('Recorded intermediate sequence.'))
       ->setRequired(FALSE);
@@ -73,16 +73,16 @@ class ReplicationHistoryItem extends FieldItemBase {
       ->setDescription(t('Unique session ID for the replication.'))
       ->setRequired(TRUE);
 
-    $properties['start_last_seq'] = DataDefinition::create('integer')
-      ->setLabel(t('Start sequence'))
-      ->setDescription(t('Sequence ID where the replication started.'))
-      ->setRequired(FALSE);
-
     $properties['start_time'] = DataDefinition::create('datetime_iso8601')
       ->setLabel(t('Start time'))
       ->setDescription(t('Date and time when replication started.'))
       ->setRequired(FALSE);
 
+    $properties['end_time'] = DataDefinition::create('datetime_iso8601')
+      ->setLabel(t('End time'))
+      ->setDescription(t('Date and time when replication ended.'))
+      ->setRequired(FALSE);
+
     return $properties;
   }
 
@@ -107,16 +107,6 @@ class ReplicationHistoryItem extends FieldItemBase {
           'unsigned' => TRUE,
           'not null' => FALSE,
         ],
-        'end_last_seq' => [
-          'type' => 'int',
-          'size' => 'big',
-          'not null' => FALSE,
-        ],
-        'end_time' => [
-          'type' => 'varchar',
-          'length' => 50,
-          'not null' => FALSE,
-        ],
         'missing_checked' => [
           'type' => 'int',
           'unsigned' => TRUE,
@@ -127,20 +117,24 @@ class ReplicationHistoryItem extends FieldItemBase {
           'unsigned' => TRUE,
           'not null' => FALSE,
         ],
-        'recorded_seq' => [
-          'type' => 'int',
-          'size' => 'big',
-          'not null' => FALSE,
-          'default' => 0,
-        ],
         'session_id' => [
           'type' => 'varchar',
           'length' => 128,
           'not null' => TRUE,
         ],
+        'recorded_seq' => [
+          'type' => 'varchar',
+          'length' => 512,
+          'not null' => TRUE,
+        ],
         'start_last_seq' => [
-          'type' => 'int',
-          'size' => 'big',
+          'type' => 'varchar',
+          'length' => 512,
+          'not null' => FALSE,
+        ],
+        'end_last_seq' => [
+          'type' => 'varchar',
+          'length' => 512,
           'not null' => FALSE,
         ],
         'start_time' => [
@@ -148,6 +142,11 @@ class ReplicationHistoryItem extends FieldItemBase {
           'length' => 50,
           'not null' => FALSE,
         ],
+        'end_time' => [
+          'type' => 'varchar',
+          'length' => 50,
+          'not null' => FALSE,
+        ],
       ],
     ];
   }