diff --git a/mistral/tests/unit/engine/test_with_items.py b/mistral/tests/unit/engine/test_with_items.py
index 0c7d79ca5..f0c3cce86 100644
--- a/mistral/tests/unit/engine/test_with_items.py
+++ b/mistral/tests/unit/engine/test_with_items.py
@@ -780,3 +780,85 @@ class WithItemsEngineTest(base.EngineTestCase):
         self.assertIn('Mistral', result)
 
         self.assertEqual(states.SUCCESS, task_ex.state)
+
+    def test_with_items_retry_policy(self):
+        workflow = """---
+        version: "2.0"
+
+        with_items_retry:
+          tasks:
+            task1:
+              with-items: i in [1, 2, 3]
+              action: std.fail
+              retry:
+                count: 3
+                delay: 1
+              on-error: task2
+
+            task2:
+              action: std.echo output="With-items failed"
+        """
+        wf_service.create_workflows(workflow)
+
+        # Start workflow.
+        wf_ex = self.engine.start_workflow('with_items_retry', {})
+
+        self._await(
+            lambda: self.is_execution_success(wf_ex.id)
+        )
+
+        # Note: We need to reread execution to access related tasks.
+        wf_ex = db_api.get_workflow_execution(wf_ex.id)
+
+        tasks = wf_ex.task_executions
+        self.assertEqual(2, len(tasks))
+
+        task1 = self._assert_single_item(tasks, name='task1')
+
+        self.assertEqual(
+            2,
+            task1.runtime_context['retry_task_policy']['retry_no']
+        )
+        self.assertEqual(9, len(task1.executions))
+        self._assert_multiple_items(task1.executions, 3, accepted=True)
+
+    def test_with_items_retry_policy_concurrency(self):
+        workflow = """---
+        version: "2.0"
+
+        with_items_retry_concurrency:
+          tasks:
+            task1:
+              with-items: i in [1, 2, 3, 4]
+              action: std.fail
+              retry:
+                count: 3
+                delay: 1
+              concurrency: 2
+              on-error: task2
+
+            task2:
+              action: std.echo output="With-items failed"
+        """
+        wf_service.create_workflows(workflow)
+
+        # Start workflow.
+        wf_ex = self.engine.start_workflow(
+            'with_items_retry_concurrency',
+            {}
+        )
+
+        self._await(
+            lambda: self.is_execution_success(wf_ex.id),
+        )
+
+        # Note: We need to reread execution to access related tasks.
+        wf_ex = db_api.get_workflow_execution(wf_ex.id)
+
+        tasks = wf_ex.task_executions
+        self.assertEqual(2, len(tasks))
+
+        task1 = self._assert_single_item(tasks, name='task1')
+
+        self.assertEqual(12, len(task1.executions))
+        self._assert_multiple_items(task1.executions, 4, accepted=True)
diff --git a/mistral/workflow/with_items.py b/mistral/workflow/with_items.py
index 7797719f1..245c67c7d 100644
--- a/mistral/workflow/with_items.py
+++ b/mistral/workflow/with_items.py
@@ -72,10 +72,12 @@ def _get_indices_if_rerun(unaccepted_executions):
     :return: a list of numbers.
     """
 
-    return [
-        ex.runtime_context['with_items_index']
-        for ex in unaccepted_executions
-    ]
+    return sorted(
+        set([
+            ex.runtime_context['with_items_index']
+            for ex in unaccepted_executions
+        ])
+    )
 
 
 def _get_unaccepted_act_exs(task_ex):