Wyo. Stat. § 26-18-105: Policy constitutes entire contract; changes in policy.

"Entire Contract; Changes: This policy, including the endorsements and the attached papers, if any, constitutes the entire contract of insurance. No change in this policy is valid until approved by an executive officer of the insurer and unless the approval is endorsed on or attached to this policy. No agent has authority to change this policy or to waive any of its provisions."