diff --git a/models/contract.go b/models/contract.go
index fbb2445..940f16b 100644
--- a/models/contract.go
+++ b/models/contract.go
@@ -14,9 +14,7 @@ type Runner struct {
 }
 
 type Group struct {
-	ID          int    `json:"id" validate:"required"`
-	Name        string `json:"name" validate:"required"`
-	ParentGroup *Group `json:"parent_group" validate:"optional"`
+	Name string `json:"name" validate:"required"`
 }
 
 type ContractTemplateOptions struct {