diff --git a/datapackage_pipelines/lib/set_types.py b/datapackage_pipelines/lib/set_types.py
index 9cde66ae..a3c08e15 100644
--- a/datapackage_pipelines/lib/set_types.py
+++ b/datapackage_pipelines/lib/set_types.py
@@ -6,10 +6,11 @@
 def flow(parameters):
     resources = parameters.get('resources')
     regex = parameters.get('regex', True)
+    preserve_missing_values = parameters.get('preserve_missing_values', False)
     if 'types' in parameters:
         return Flow(
             *[
-                set_type(name, resources=resources, regex=regex, **options)
+                set_type(name, resources=resources, preserve_missing_values=preserve_missing_values, regex=regex, **options)
                 if options is not None else
                 delete_fields([name], resources=resources)
                 for name, options in parameters['types'].items()