diff --git a/Metallicity_Stack_Commons/column_names.py b/Metallicity_Stack_Commons/column_names.py
index 54be5f8..4ba4b5a 100644
--- a/Metallicity_Stack_Commons/column_names.py
+++ b/Metallicity_Stack_Commons/column_names.py
@@ -28,6 +28,8 @@
 filename_dict['bin_info'] = 'bin_info.tbl'
 filename_dict['bin_fit'] = 'bin_emission_line_fit.tbl'
 filename_dict['bin_fit_revised'] = filename_dict['bin_fit'].replace('.tbl', '.revised.tbl')
+filename_dict['bin_derived_prop'] = 'bin_derived_properties.tbl'
+filename_dict['bin_derived_prop_rev'] = filename_dict['bin_derived_prop'].replace('.tbl', '.revised.tbl')
 
 
 def merge_column_names(*args):