diff --git a/src/Issue.php b/src/Issue.php
index 25078d3..9bb6f9e 100644
--- a/src/Issue.php
+++ b/src/Issue.php
@@ -30,6 +30,15 @@ class Issue extends GiteaRepoData{
     return $this->request($this->url.'/comments','GET');
   }
 
+  /*
+  * this field is handled seperatly to the others! :/
+  * https://github.com/go-gitea/gitea/issues/8179
+  */
+  public function setDueDate(\DateTime $date){
+    $args=['due_date'=>$date->format('c')];
+    return $this->request($this->url.'/deadline','POST',$args);
+  }
+
   public function hasLabel($label){
     $id=$label->id;
     foreach($this->labels as $label){