diff --git a/openmc/deplete/__init__.py b/openmc/deplete/__init__.py
index 5891555a21..753167741e 100644
--- a/openmc/deplete/__init__.py
+++ b/openmc/deplete/__init__.py
@@ -8,6 +8,7 @@ A depletion front-end tool.
 from .nuclide import *
 from .chain import *
 from .operator import *
+from .flux_operator import *
 from .reaction_rates import *
 from .atom_number import *
 from .stepresult import *