diff --git a/excel2sbol/setup.py b/excel2sbol/setup.py
index 7a1bad9..9098274 100755
--- a/excel2sbol/setup.py
+++ b/excel2sbol/setup.py
@@ -26,5 +26,5 @@
                         'tyto>=1.2',
                         'sbol3>=1.0.1',
                         'xlrd >= 1.0.0',
-                        'excel_sbol_utils >= 1.0.38'],
+                        'excel_sbol_utils >= 1.0.42'],
       zip_safe=False)