Any modifications to this Agreement may only be done in writing between the parts.

Modified Only in Writing. This Agreement may only be modified by express written agreement of the Parties.

This Agreement can be modified only by a written agreement duly signed by each party.

This Consulting Agreement may be modified only in writing by the parties.

Any changes to this agreement must be agreed to by both Parties in writing.

This Agreement may not be modified or amended except by a written document signed by the parties.

This Agreement may be amended only by an instrument in writing executed by all the parties hereto.

This Agreement may be amended only by an instrument in writing signed by both parties.

No modifications of this Agreement shall be valid unless made in writing and signed by the parties hereto.

This Agreement may not be modified or amended except by an instrument in writing signed by the parties hereto.