diff --git a/core/modules/rdf/migrations/d7_rdf_mapping.yml b/core/modules/rdf/migrations/d7_rdf_mapping.yml
index 35600df704..29fffe410c 100644
--- a/core/modules/rdf/migrations/d7_rdf_mapping.yml
+++ b/core/modules/rdf/migrations/d7_rdf_mapping.yml
@@ -21,7 +21,12 @@ process:
     process:
       properties: predicates
       datatype: datatype
-      datatype_callback/callable: callback
+      datatype_callback/callable:
+        plugin: static_map
+        source: callback
+        bypass: true
+        map:
+          date_iso8601: Drupal\rdf\CommonDataConverter::dateIso8601Value
       mapping_type: type
 destination:
   plugin: entity:rdf_mapping