diff --git a/issue.go b/issue.go
index 604e285..d9675b7 100644
--- a/issue.go
+++ b/issue.go
@@ -101,6 +101,7 @@ type IssueFields struct {
 	Subtasks             []*Subtasks   `json:"subtasks,omitempty" structs:"subtasks,omitempty"`
 	Attachments          []*Attachment `json:"attachment,omitempty" structs:"attachment,omitempty"`
 	Epic                 *Epic         `json:"epic,omitempty" structs:"epic,omitempty"`
+	Parent               *Parent       `json:"parent,omitempty" structs:"parent,omitempty"`
 	Unknowns             tcontainer.MarshalMap
 }
 
@@ -261,6 +262,12 @@ type Progress struct {
 	Total    int `json:"total" structs:"total"`
 }
 
+// Parent represents the parent of a JIRA issue, to be used with subtask issue types.
+type Parent struct {
+	ID  string `json:"id,omitempty" structs:"id"`
+	Key string `json:"key,omitempty" structs:"key"`
+}
+
 // Time represents the Time definition of JIRA as a time.Time of go
 type Time time.Time
 
diff --git a/issue_test.go b/issue_test.go
index 56a1bbf..3e28f36 100644
--- a/issue_test.go
+++ b/issue_test.go
@@ -636,7 +636,7 @@ func TestIssueFields_MarshalJSON_Success(t *testing.T) {
 	}
 
 	if !reflect.DeepEqual(i, recieved) {
-		t.Errorf("Recieved object different from expected")
+		t.Errorf("Recieved object different from expected. Expected %+v, recieved %+v", i, recieved)
 	}
 }