diff --git a/taiga/projects/serializers.py b/taiga/projects/serializers.py
index 1d8a5799..a24281c7 100644
--- a/taiga/projects/serializers.py
+++ b/taiga/projects/serializers.py
@@ -356,6 +356,14 @@ class ProjectDetailSerializer(ProjectSerializer):
     tasks_csv_uuid = Field()
     userstories_csv_uuid = Field()
     transfer_token = Field()
+    milestones = MethodField()
+
+    def get_milestones(self, obj):
+        assert hasattr(obj, "milestones_attr"), "instance must have a milestones_attr attribute"
+        if obj.milestones_attr is None:
+            return []
+
+        return obj.milestones_attr
 
     def to_value(self, instance):
         # Name attributes must be translated
diff --git a/taiga/projects/utils.py b/taiga/projects/utils.py
index ee552136..d8c46072 100644
--- a/taiga/projects/utils.py
+++ b/taiga/projects/utils.py
@@ -50,6 +50,31 @@ def attach_members(queryset, as_field="members_attr"):
     return queryset
 
 
+def attach_milestones(queryset, as_field="milestones_attr"):
+    """Attach a json milestons representation to each object of the queryset.
+
+    :param queryset: A Django projects queryset object.
+    :param as_field: Attach the milestones as an attribute with this name.
+
+    :return: Queryset object with the additional `as_field` field.
+    """
+    model = queryset.model
+    sql = """SELECT json_agg(row_to_json(t))
+                FROM(
+                    SELECT
+                        milestones_milestone.id,
+                        milestones_milestone.slug,
+                        milestones_milestone.name,
+                        milestones_milestone.closed
+                    FROM milestones_milestone
+                    WHERE milestones_milestone.project_id = {tbl}.id
+                    ORDER BY estimated_start) t"""
+
+    sql = sql.format(tbl=model._meta.db_table)
+    queryset = queryset.extra(select={as_field: sql})
+    return queryset
+
+
 def attach_closed_milestones(queryset, as_field="closed_milestones_attr"):
     """Attach a closed milestones counter to each object of the queryset.
 
@@ -432,5 +457,6 @@ def attach_extra_info(queryset, user=None):
     queryset = attach_my_role_permissions(queryset, user)
     queryset = attach_private_projects_same_owner(queryset, user)
     queryset = attach_public_projects_same_owner(queryset, user)
+    queryset = attach_milestones(queryset)
 
     return queryset