diff --git a/taiga/projects/serializers.py b/taiga/projects/serializers.py
index b3c9d029..7a064655 100644
--- a/taiga/projects/serializers.py
+++ b/taiga/projects/serializers.py
@@ -72,6 +72,7 @@ class IssueTypeSerializer(serializers.ModelSerializer):
 class MembershipSerializer(serializers.ModelSerializer):
     invited_by = serializers.SerializerMethodField("get_invited_by")
     project_name = serializers.SerializerMethodField("get_project_name")
+    project_slug = serializers.SerializerMethodField("get_project_slug")
 
     class Meta:
         model = models.Membership
@@ -89,6 +90,9 @@ class MembershipSerializer(serializers.ModelSerializer):
     def get_project_name(self, obj):
         return obj.project.name if obj and obj.project else ""
 
+    def get_project_slug(self, obj):
+        return obj.project.slug if obj and obj.project else ""
+
 
 class ProjectMembershipSerializer(serializers.ModelSerializer):
     role_name = serializers.CharField(source='role.name', required=False)