diff --git a/src/Solr/SolrIndex.php b/src/Solr/SolrIndex.php
index 19cb1dc..44d59c4 100644
--- a/src/Solr/SolrIndex.php
+++ b/src/Solr/SolrIndex.php
@@ -31,6 +31,9 @@ abstract class SolrIndex extends SearchIndex
         '*' => 'string',
         'Boolean' => 'boolean',
         'Date' => 'tdate',
+        'Datetime' => 'tdate',
+        'DBDate' => 'tdate',
+        'DBDatetime' => 'tdate',
         'SSDatetime' => 'tdate',
         'SS_Datetime' => 'tdate',
         'ForeignKey' => 'tint',