diff --git a/pyomo/contrib/gdpopt/plugins.py b/pyomo/contrib/gdpopt/plugins.py
index 3ebad88a626..9d729c63d9c 100644
--- a/pyomo/contrib/gdpopt/plugins.py
+++ b/pyomo/contrib/gdpopt/plugins.py
@@ -16,3 +16,4 @@ def load():
     import pyomo.contrib.gdpopt.branch_and_bound
     import pyomo.contrib.gdpopt.loa
     import pyomo.contrib.gdpopt.ric
+    import pyomo.contrib.gdpopt.enumerate