diff --git a/Source/HTTPMethod.swift b/Source/HTTPMethod.swift
index d5a3c53..1641ef7 100644
--- a/Source/HTTPMethod.swift
+++ b/Source/HTTPMethod.swift
@@ -29,7 +29,7 @@ import Foundation
  
  See [IETF document](https://tools.ietf.org/html/rfc7231#section-4.3)
  */
-public enum HTTPMethod: String, Sendable {
+public enum HTTPMethod: String, Sendable, CaseIterable {
     case GET
     case POST
     case PUT