diff --git a/CHANGELOG.md b/CHANGELOG.md
index 644df116..1561f620 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,7 +10,9 @@
 - Ability to create rich text custom fields in Epics, User Stories, Tasks and Isues.
 
 ### Misc
-- API: Filter milestones, user stories and tasks by estimated_start and estimated_finish dates.
+- API:
+    - Filter milestones, user stories and tasks by estimated_start and estimated_finish dates.
+    - Add project_extra_info to epics, tasks, milestones, issues and wiki pages endpoints.
 - Lots of small and not so small bugfixes.
 
 
diff --git a/taiga/projects/epics/serializers.py b/taiga/projects/epics/serializers.py
index 339272de..feccc79a 100644
--- a/taiga/projects/epics/serializers.py
+++ b/taiga/projects/epics/serializers.py
@@ -23,6 +23,7 @@ from taiga.base.neighbors import NeighborsSerializerMixin
 from taiga.mdrender.service import render as mdrender
 from taiga.projects.attachments.serializers import BasicAttachmentsInfoSerializerMixin
 from taiga.projects.mixins.serializers import OwnerExtraInfoSerializerMixin
+from taiga.projects.mixins.serializers import ProjectExtraInfoSerializerMixin
 from taiga.projects.mixins.serializers import AssignedToExtraInfoSerializerMixin
 from taiga.projects.mixins.serializers import StatusExtraInfoSerializerMixin
 from taiga.projects.notifications.mixins import WatchedResourceSerializer
@@ -32,7 +33,8 @@ from taiga.projects.votes.mixins.serializers import VoteResourceSerializerMixin
 
 class EpicListSerializer(VoteResourceSerializerMixin, WatchedResourceSerializer,
                          OwnerExtraInfoSerializerMixin, AssignedToExtraInfoSerializerMixin,
-                         StatusExtraInfoSerializerMixin, BasicAttachmentsInfoSerializerMixin,
+                         StatusExtraInfoSerializerMixin, ProjectExtraInfoSerializerMixin,
+                         BasicAttachmentsInfoSerializerMixin,
                          TaggedInProjectResourceSerializer, serializers.LightSerializer):
 
     id = Field()
diff --git a/taiga/projects/issues/serializers.py b/taiga/projects/issues/serializers.py
index c8d3b5dc..8ec8e492 100644
--- a/taiga/projects/issues/serializers.py
+++ b/taiga/projects/issues/serializers.py
@@ -22,6 +22,7 @@ from taiga.base.neighbors import NeighborsSerializerMixin
 
 from taiga.mdrender.service import render as mdrender
 from taiga.projects.mixins.serializers import OwnerExtraInfoSerializerMixin
+from taiga.projects.mixins.serializers import ProjectExtraInfoSerializerMixin
 from taiga.projects.mixins.serializers import AssignedToExtraInfoSerializerMixin
 from taiga.projects.mixins.serializers import StatusExtraInfoSerializerMixin
 from taiga.projects.notifications.mixins import WatchedResourceSerializer
@@ -31,7 +32,7 @@ from taiga.projects.votes.mixins.serializers import VoteResourceSerializerMixin
 
 class IssueListSerializer(VoteResourceSerializerMixin, WatchedResourceSerializer,
                           OwnerExtraInfoSerializerMixin, AssignedToExtraInfoSerializerMixin,
-                          StatusExtraInfoSerializerMixin,
+                          StatusExtraInfoSerializerMixin, ProjectExtraInfoSerializerMixin,
                           TaggedInProjectResourceSerializer, serializers.LightSerializer):
     id = Field()
     ref = Field()
diff --git a/taiga/projects/milestones/serializers.py b/taiga/projects/milestones/serializers.py
index 44b3e8f4..49f7e09c 100644
--- a/taiga/projects/milestones/serializers.py
+++ b/taiga/projects/milestones/serializers.py
@@ -20,9 +20,12 @@ from taiga.base.api import serializers
 from taiga.base.fields import Field, MethodField
 from taiga.projects.notifications.mixins import WatchedResourceSerializer
 from taiga.projects.userstories.serializers import UserStoryListSerializer
+from taiga.projects.mixins.serializers import ProjectExtraInfoSerializerMixin
 
 
-class MilestoneSerializer(WatchedResourceSerializer, serializers.LightSerializer):
+class MilestoneSerializer(WatchedResourceSerializer,
+                          ProjectExtraInfoSerializerMixin,
+                          serializers.LightSerializer):
     id = Field()
     name = Field()
     slug = Field()
diff --git a/taiga/projects/tasks/serializers.py b/taiga/projects/tasks/serializers.py
index c1fca652..0a877b4f 100644
--- a/taiga/projects/tasks/serializers.py
+++ b/taiga/projects/tasks/serializers.py
@@ -23,6 +23,7 @@ from taiga.base.neighbors import NeighborsSerializerMixin
 from taiga.mdrender.service import render as mdrender
 from taiga.projects.attachments.serializers import BasicAttachmentsInfoSerializerMixin
 from taiga.projects.mixins.serializers import OwnerExtraInfoSerializerMixin
+from taiga.projects.mixins.serializers import ProjectExtraInfoSerializerMixin
 from taiga.projects.mixins.serializers import AssignedToExtraInfoSerializerMixin
 from taiga.projects.mixins.serializers import StatusExtraInfoSerializerMixin
 from taiga.projects.notifications.mixins import WatchedResourceSerializer
@@ -30,11 +31,12 @@ from taiga.projects.tagging.serializers import TaggedInProjectResourceSerializer
 from taiga.projects.votes.mixins.serializers import VoteResourceSerializerMixin
 from taiga.projects.history.mixins import TotalCommentsSerializerMixin
 
+
 class TaskListSerializer(VoteResourceSerializerMixin, WatchedResourceSerializer,
                          OwnerExtraInfoSerializerMixin, AssignedToExtraInfoSerializerMixin,
-                         StatusExtraInfoSerializerMixin, BasicAttachmentsInfoSerializerMixin,
-                         TaggedInProjectResourceSerializer, TotalCommentsSerializerMixin,
-                         serializers.LightSerializer):
+                         StatusExtraInfoSerializerMixin, ProjectExtraInfoSerializerMixin,
+                         BasicAttachmentsInfoSerializerMixin, TaggedInProjectResourceSerializer,
+                         TotalCommentsSerializerMixin, serializers.LightSerializer):
 
     id = Field()
     user_story = Field(attr="user_story_id")
diff --git a/taiga/projects/wiki/serializers.py b/taiga/projects/wiki/serializers.py
index a7e36c60..548fbd17 100644
--- a/taiga/projects/wiki/serializers.py
+++ b/taiga/projects/wiki/serializers.py
@@ -19,11 +19,15 @@
 from taiga.base.api import serializers
 from taiga.base.fields import Field, MethodField
 from taiga.projects.history import services as history_service
+from taiga.projects.mixins.serializers import ProjectExtraInfoSerializerMixin
 from taiga.projects.notifications.mixins import WatchedResourceSerializer
 from taiga.mdrender.service import render as mdrender
 
 
-class WikiPageSerializer(WatchedResourceSerializer, serializers.LightSerializer):
+class WikiPageSerializer(
+    WatchedResourceSerializer, ProjectExtraInfoSerializerMixin,
+    serializers.LightSerializer
+):
     id = Field()
     project = Field(attr="project_id")
     slug = Field()