No course of dealing between the Parties hereto shall be effective to amend, modify, or change any provision of this Agreement. This Agreement may not be amended, modified, or changed in any respect except by an agreement in writing signed by the Party against whom such change is to be enforced. The Parties may, subject to the provisions of this Section 25.3, from time to time, enter into supplemental written agreements for the purpose of adding any provisions to this Agreement or changing in any manner the rights and obligations of the Parties under this Agreement or any Schedule hereto. Any such supplemental written agreement executed by the Parties shall be binding upon the Parties.