diff --git a/news/130.feature b/news/130.feature
new file mode 100644
index 0000000..9e8ad04
--- /dev/null
+++ b/news/130.feature
@@ -0,0 +1 @@
+Allows working copy of Plone Site. @wesleybl
diff --git a/plone/app/iterate/base.py b/plone/app/iterate/base.py
index 062574c..d38da35 100644
--- a/plone/app/iterate/base.py
+++ b/plone/app/iterate/base.py
@@ -65,7 +65,12 @@ def checkout(self, container):
 
         # use the object copier to checkout the content to the container
         copier = queryAdapter(self.context, IObjectCopier)
-        working_copy, relation = copier.copyTo(container)
+        # The container for the Portal's working copy is the Portal itself.
+        if self.context.portal_type == "Plone Site":
+            working_copy_container = self.context
+        else:
+            working_copy_container = container
+        working_copy, relation = copier.copyTo(working_copy_container)
 
         # publish the event for any subscribers
         notify(CheckoutEvent(self.context, working_copy, relation))
diff --git a/plone/app/iterate/containers.py b/plone/app/iterate/containers.py
index c22142c..da1cc18 100644
--- a/plone/app/iterate/containers.py
+++ b/plone/app/iterate/containers.py
@@ -64,11 +64,11 @@ def __init__(self, context):
 
     @property
     def available(self):
-        return bool(
-            getSecurityManager().checkPermission(
-                AddPortalContent, aq_parent(aq_inner(self.context))
-            )
-        )
+        obj = aq_inner(self.context)
+        # In Plone Site checkout, the working copy container is the portal itself.
+        if obj.portal_type != "Plone Site":
+            obj = aq_parent(obj)
+        return bool(getSecurityManager().checkPermission(AddPortalContent, obj))
 
     def __call__(self):
         if not self.available:
diff --git a/plone/app/iterate/dexterity/configure.zcml b/plone/app/iterate/dexterity/configure.zcml
index 0457c7b..2909fdf 100644
--- a/plone/app/iterate/dexterity/configure.zcml
+++ b/plone/app/iterate/dexterity/configure.zcml
@@ -29,4 +29,8 @@
     <implements interface="plone.app.iterate.dexterity.interfaces.IDexterityIterateAware" />
   </class>
 
+  <class class="Products.CMFPlone.Portal.PloneSite">
+    <implements interface="plone.app.iterate.dexterity.interfaces.IDexterityIterateAware" />
+  </class>
+
 </configure>
diff --git a/plone/app/iterate/dexterity/copier.py b/plone/app/iterate/dexterity/copier.py
index bfa8ab4..3e4d47f 100644
--- a/plone/app/iterate/dexterity/copier.py
+++ b/plone/app/iterate/dexterity/copier.py
@@ -98,6 +98,10 @@ def _replaceBaseline(self, baseline):
         return baseline
 
     def _reassembleWorkingCopy(self, new_baseline, baseline):
+        # Does not change Plone Site permissions.
+        if new_baseline.portal_type == "Plone Site":
+            return new_baseline
+
         # reattach the source's workflow history, try avoid a dangling ref
         try:
             new_baseline.workflow_history = PersistentMapping(
@@ -171,11 +175,20 @@ def checkin(self, checkin_message):
 
 class FolderishContentCopier(ContentCopier):
     def _copyBaseline(self, container):
+        if self.context.portal_type == "Plone Site":
+            portal_type = "Document"
+        else:
+            portal_type = self.context.portal_type
         obj = createContentInContainer(
             container,
-            self.context.portal_type,
+            portal_type,
             id=f"working_copy_of_{self.context.id}",
         )
+        # Since the working copy of the Portal is originally a Document,
+        # we force its portal_type to "Plone Site", so that the "Plone Site"
+        # schema is used.
+        if self.context.portal_type == "Plone Site":
+            obj.portal_type = "Plone Site"
 
         # copy all field values from the baseline to the working copy
         for schema in iterSchemata(self.context):
diff --git a/plone/app/iterate/tests/test_containers.py b/plone/app/iterate/tests/test_containers.py
index b79735d..d18df35 100644
--- a/plone/app/iterate/tests/test_containers.py
+++ b/plone/app/iterate/tests/test_containers.py
@@ -219,11 +219,11 @@ def test_container_control_checkin_allowed_with_no_policy(self):
         self.assertFalse(control.checkin_allowed())
 
     def test_container_control_checkout_allowed_with_no_policy(self):
-        control = Control(self.portal, self.layer["request"])
+        control = Control(self.portal.docs, self.layer["request"])
         self.assertFalse(control.checkout_allowed())
 
     def test_container_control_cancel_allowed_with_no_policy(self):
-        control = Control(self.portal, self.layer["request"])
+        control = Control(self.portal.docs, self.layer["request"])
         self.assertFalse(control.cancel_allowed())
 
     def test_container_control_cancel_on_original_does_not_delete_original(self):
diff --git a/plone/app/iterate/tests/test_iterate.py b/plone/app/iterate/tests/test_iterate.py
index 93b9397..dc72b04 100644
--- a/plone/app/iterate/tests/test_iterate.py
+++ b/plone/app/iterate/tests/test_iterate.py
@@ -126,11 +126,11 @@ def test_control_checkin_allowed_with_no_policy(self):
         self.assertFalse(control.checkin_allowed())
 
     def test_control_checkout_allowed_with_no_policy(self):
-        control = Control(self.portal, self.layer["request"])
+        control = Control(self.portal.docs, self.layer["request"])
         self.assertFalse(control.checkout_allowed())
 
     def test_control_cancel_allowed_with_no_policy(self):
-        control = Control(self.portal, self.layer["request"])
+        control = Control(self.portal.docs, self.layer["request"])
         self.assertFalse(control.cancel_allowed())
 
     def test_control_cancel_on_original_does_not_delete_original(self):