diff --git a/lib/galaxy/config/sample/datatypes_conf.xml.sample b/lib/galaxy/config/sample/datatypes_conf.xml.sample
index 936c1357b66c..c0aabeb5008d 100644
--- a/lib/galaxy/config/sample/datatypes_conf.xml.sample
+++ b/lib/galaxy/config/sample/datatypes_conf.xml.sample
@@ -359,6 +359,12 @@
     <datatype extension="tar" auto_compressed_types="gz,bz2" type="galaxy.datatypes.binary:CompressedArchive" subclass="true" display_in_upload="true">
       <converter file="archive_to_directory.xml" target_datatype="directory"/>
     </datatype>
+    <datatype extension="kraken2db.tar" auto_compressed_types="gz,bz2" type="galaxy.datatypes.binary:Binary" subclass="true" display_in_upload="true" description="Kraken2 database archive">
+      <converter file="archive_to_directory.xml" target_datatype="kraken2db"/>
+    </datatype>
+    <datatype extension="kraken2db" type="galaxy.datatypes.data:Directory" subclass="true" description="Kraken2 database directory">
+      <converter file="directory_to_archive.xml" target_datatype="kraken2db.tar.gz"/>
+    </datatype>
     <datatype extension="directory" type="galaxy.datatypes.data:Directory"/>
     <datatype extension="bwa_index" display_in_upload="true" type="galaxy.datatypes.data:Directory" subclass="true"/>
     <datatype extension="bwa_mem2_index" display_in_upload="true" type="galaxy.datatypes.data:Directory" subclass="true"/>