diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9229986..d0517fe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,9 @@
 ## Breaking changes
 - `federation.outbound.handle_create_payload` parameter `to_user` is now optional. Public posts don't need a recipient. This also affects Diaspora protocol `build_send` method where the change is reflected similarly. [#43](https://github.com/jaywink/social-federation/pull/43)
      - In practise this means the signature has changed for `handle_create_payload` and `build_send` from **`from_user, to_user, entity`** to **`entity, from_user, to_user=None`**.
+     
+## Added
+- `Post.provider_display_name` is now supported in the entity outbound/inbound mappers. [#44](https://github.com/jaywink/social-federation/pull/44)
 
 ## [0.4.1] - 2016-09-04
 
diff --git a/federation/entities/diaspora/entities.py b/federation/entities/diaspora/entities.py
index 8119adf..a467ca6 100644
--- a/federation/entities/diaspora/entities.py
+++ b/federation/entities/diaspora/entities.py
@@ -37,7 +37,8 @@ class DiasporaPost(DiasporaEntityMixin, Post):
             {'guid': self.guid},
             {'diaspora_handle': self.handle},
             {'public': 'true' if self.public else 'false'},
-            {'created_at': format_dt(self.created_at)}
+            {'created_at': format_dt(self.created_at)},
+            {'provider_display_name': self.provider_display_name},
         ])
         return element
 
diff --git a/federation/tests/entities/diaspora/test_entities.py b/federation/tests/entities/diaspora/test_entities.py
index 01c5515..e7e120f 100644
--- a/federation/tests/entities/diaspora/test_entities.py
+++ b/federation/tests/entities/diaspora/test_entities.py
@@ -7,14 +7,17 @@ from federation.entities.diaspora.entities import DiasporaComment, DiasporaPost,
 
 class TestEntitiesConvertToXML(object):
     def test_post_to_xml(self):
-        entity = DiasporaPost(raw_content="raw_content", guid="guid", handle="handle", public=True)
+        entity = DiasporaPost(
+            raw_content="raw_content", guid="guid", handle="handle", public=True,
+            provider_display_name="Socialhome"
+        )
         result = entity.to_xml()
         assert result.tag == "status_message"
         assert len(result.find("created_at").text) > 0
         result.find("created_at").text = ""  # timestamp makes testing painful
         converted = b"<status_message><raw_message>raw_content</raw_message><guid>guid</guid>" \
                     b"<diaspora_handle>handle</diaspora_handle><public>true</public><created_at>" \
-                    b"</created_at></status_message>"
+                    b"</created_at><provider_display_name>Socialhome</provider_display_name></status_message>"
         assert etree.tostring(result) == converted
 
     def test_comment_to_xml(self):
diff --git a/federation/tests/entities/diaspora/test_mappers.py b/federation/tests/entities/diaspora/test_mappers.py
index 0214276..1f6b965 100644
--- a/federation/tests/entities/diaspora/test_mappers.py
+++ b/federation/tests/entities/diaspora/test_mappers.py
@@ -23,6 +23,7 @@ class TestDiasporaEntityMappersReceive(object):
         assert post.handle == "alice@alice.diaspora.example.org"
         assert post.public == False
         assert post.created_at == datetime(2011, 7, 20, 1, 36, 7)
+        assert post.provider_display_name == "Socialhome"
 
     def test_message_to_objects_comment(self):
         entities = message_to_objects(DIASPORA_POST_COMMENT)
diff --git a/federation/tests/fixtures/payloads.py b/federation/tests/fixtures/payloads.py
index ab0bda4..d3dab6f 100644
--- a/federation/tests/fixtures/payloads.py
+++ b/federation/tests/fixtures/payloads.py
@@ -36,6 +36,7 @@ DIASPORA_POST_SIMPLE = """<XML>
           <diaspora_handle>alice@alice.diaspora.example.org</diaspora_handle>
           <public>false</public>
           <created_at>2011-07-20 01:36:07 UTC</created_at>
+          <provider_display_name>Socialhome</provider_display_name>
         </status_message>
       </post>
     </XML>