diff --git a/app/Http/Controllers/Issues/OptionController.php b/app/Http/Controllers/Issues/OptionController.php
index bad3511..a37a200 100644
--- a/app/Http/Controllers/Issues/OptionController.php
+++ b/app/Http/Controllers/Issues/OptionController.php
@@ -11,9 +11,11 @@ class OptionController extends Controller
     public function update(Request $request, Issue $issue)
     {
         $issueData = $request->validate([
-            'status_id' => 'required|in:0,1,2,3,4',
-            'pic_id'    => 'nullable|exists:users,id',
+            'priority_id' => 'required|in:1,2,3',
+            'status_id'   => 'required|in:0,1,2,3,4',
+            'pic_id'      => 'nullable|exists:users,id',
         ]);
+        $issue->priority_id = $issueData['priority_id'];
         $issue->status_id = $issueData['status_id'];
         $issue->pic_id = $issueData['pic_id'];
         $issue->save();
diff --git a/app/Http/Controllers/Projects/IssueController.php b/app/Http/Controllers/Projects/IssueController.php
index 09ea564..247143e 100644
--- a/app/Http/Controllers/Projects/IssueController.php
+++ b/app/Http/Controllers/Projects/IssueController.php
@@ -50,10 +50,13 @@ class IssueController extends Controller
 
     public function show(Project $project, Issue $issue)
     {
+        $priorities = Priority::toArray();
         $statuses = IssueStatus::toArray();
         $users = User::pluck('name', 'id');
 
-        return view('projects.issues.show', compact('project', 'issue', 'users', 'statuses'));
+        return view('projects.issues.show', compact(
+            'project', 'issue', 'users', 'statuses', 'priorities'
+        ));
     }
 
     public function edit(Project $project, Issue $issue)
diff --git a/resources/views/projects/issues/show.blade.php b/resources/views/projects/issues/show.blade.php
index 42f60af..e06613a 100755
--- a/resources/views/projects/issues/show.blade.php
+++ b/resources/views/projects/issues/show.blade.php
@@ -37,6 +37,7 @@
         <div class="panel panel-default">
             <div class="panel-heading"><h3 class="panel-title">{{ __('app.action') }}</h3></div>
             <div class="panel-body">
+                {!! FormField::radios('priority_id', $priorities, ['label' => __('issue.priority')]) !!}
                 {!! FormField::radios('status_id', $statuses, ['label' => __('app.status')]) !!}
                 {!! FormField::select('pic_id', $users, ['label' => __('issue.assign_pic'), 'placeholder' => __('issue.select_pic')]) !!}
             </div>
diff --git a/tests/Feature/Projects/ProjectIssuesTest.php b/tests/Feature/Projects/ProjectIssuesTest.php
index fa5f75c..9d27f9f 100644
--- a/tests/Feature/Projects/ProjectIssuesTest.php
+++ b/tests/Feature/Projects/ProjectIssuesTest.php
@@ -192,4 +192,28 @@ class ProjectIssuesTest extends TestCase
             'status_id' => 2, // resolved
         ]);
     }
+
+    /** @test */
+    public function user_can_change_issue_priority()
+    {
+        $this->adminUserSigningIn();
+        $worker = $this->createUser('worker');
+        $issue = factory(Issue::class)->create();
+
+        $this->visitRoute('projects.issues.show', [$issue->project, $issue]);
+        $this->submitForm(__('issue.update'), [
+            'priority_id' => 2, // major
+            'status_id'   => 2, // resolved
+            'pic_id'      => $worker->id,
+        ]);
+        $this->seeRouteIs('projects.issues.show', [$issue->project, $issue]);
+        $this->seeText(__('issue.updated'));
+
+        $this->seeInDatabase('issues', [
+            'id'          => $issue->id,
+            'pic_id'      => $worker->id,
+            'priority_id' => 2, // major
+            'status_id'   => 2, // resolved
+        ]);
+    }
 }