diff --git a/api/challenges.go b/api/challenges.go
index cf2221b..6dfc718 100644
--- a/api/challenges.go
+++ b/api/challenges.go
@@ -32,6 +32,7 @@ type PostChallengesParams struct {
 	Decay          *int          `json:"decay,omitempty"`
 	Minimum        *int          `json:"minimum,omitempty"`
 	MaxAttempts    *int          `json:"max_attempts,omitempty"`
+	NextID         *int          `json:"next_id,omitempty"`
 	Requirements   *Requirements `json:"requirements,omitempty"`
 	State          string        `json:"state"`
 	Type           string        `json:"type"`
@@ -86,6 +87,7 @@ type PatchChallengeParams struct {
 	Decay          *int    `json:"decay,omitempty"`
 	Minimum        *int    `json:"minimum,omitempty"`
 	MaxAttempts    *int    `json:"max_attempts,omitempty"`
+	NextID         *int    `json:"next_id,omitempty"`
 	// Requirements can update the challenge's behavior and prerequisites i.e.
 	// the other challenges the team/user must have solved before.
 	// WARNING: it won't return those in the response body, so updating this
diff --git a/api/model.go b/api/model.go
index 7cdf7b1..57bfa62 100644
--- a/api/model.go
+++ b/api/model.go
@@ -6,7 +6,6 @@ type (
 		Name           string        `json:"name"`
 		Description    string        `json:"description"`
 		ConnectionInfo *string       `json:"connection_info,omitempty"`
-		NextID         *int          `json:"next_id"`
 		MaxAttempts    *int          `json:"max_attempts,omitempty"`
 		Function       string        `json:"function"`
 		Value          int           `json:"value"`
@@ -17,6 +16,7 @@ type (
 		Type           string        `json:"type"`
 		TypeDate       *Type         `json:"type_data,omitempty"`
 		State          string        `json:"state"`
+		NextID         *int          `json:"next_id"`
 		Requirements   *Requirements `json:"requirements"` // List of challenge IDs to complete before
 		Solves         int           `json:"solves"`
 		SolvedByMe     bool          `json:"solved_by_me"`