diff --git a/pyomo/contrib/pynumero/exceptions.py b/pyomo/contrib/pynumero/exceptions.py
index f73ef62887d..dc2167d75d2 100644
--- a/pyomo/contrib/pynumero/exceptions.py
+++ b/pyomo/contrib/pynumero/exceptions.py
@@ -9,10 +9,12 @@
 #  This software is distributed under the 3-clause BSD License.
 #  ___________________________________________________________________________
 
+
 class PyNumeroEvaluationError(ArithmeticError):
     """An exception to be raised by PyNumero evaluation backends in the event
     of a failed function evaluation. This should be caught by solver interfaces
     and translated to the solver-specific evaluation error API.
 
     """
+
     pass