diff --git a/fermipy/diffuse/source_factory.py b/fermipy/diffuse/source_factory.py
index <HASH>..<HASH> 100644
--- a/fermipy/diffuse/source_factory.py
+++ b/fermipy/diffuse/source_factory.py
@@ -172,6 +172,8 @@ class SourceFactory(object):
             return catalog.Catalog4FGLP(fitsfile=catalog_file, extdir=catalog_extdir)
         elif catalog_type == '4FGL':
             return catalog.Catalog4FGL(fitsfile=catalog_file, extdir=catalog_extdir)
+        elif catalog_type == 'FL8Y':
+            return catalog.CatalogFL8Y(fitsfile=catalog_file, extdir=catalog_extdir)
         else:
             table = Table.read(catalog_file)
         return catalog.Catalog(table, extdir=catalog_extdir)
added branch to load FL8Y type catalog