diff --git a/api/projects/serializers.py b/api/projects/serializers.py
index 447b56879fea..54e13fc8656f 100644
--- a/api/projects/serializers.py
+++ b/api/projects/serializers.py
@@ -49,11 +49,6 @@ class Meta:
             "edge_v2_migration_status",
         )
 
-    def update(self, instance: Project, validated_data: dict) -> Project:
-        # Prevent updates to `organisation` field
-        validated_data.pop("organisation", None)
-        return super().update(instance, validated_data)
-
     def get_migration_status(self, obj: Project) -> str:
         if not settings.PROJECT_METADATA_TABLE_NAME_DYNAMO:
             migration_status = ProjectIdentityMigrationStatus.NOT_APPLICABLE.value
@@ -74,9 +69,7 @@ def get_use_edge_identities(self, obj: Project) -> bool:
         )
 
 
-class ProjectUpdateOrCreateSerializer(
-    ReadOnlyIfNotValidPlanMixin, ProjectListSerializer
-):
+class ProjectCreateSerializer(ReadOnlyIfNotValidPlanMixin, ProjectListSerializer):
     invalid_plans_regex = r"^(free|startup.*|scale-up.*)$"
     field_names = ("stale_flags_limit_days", "enable_realtime_updates")
 
@@ -98,6 +91,13 @@ def get_subscription(self) -> typing.Optional[Subscription]:
         return None
 
 
+class ProjectUpdateSerializer(ProjectCreateSerializer):
+    class Meta(ProjectCreateSerializer.Meta):
+        read_only_fields = ProjectCreateSerializer.Meta.read_only_fields + (
+            "organisation",
+        )
+
+
 class ProjectRetrieveSerializer(ProjectListSerializer):
     total_features = serializers.SerializerMethodField()
     total_segments = serializers.SerializerMethodField()
diff --git a/api/projects/views.py b/api/projects/views.py
index 42929321015e..27c720f6a138 100644
--- a/api/projects/views.py
+++ b/api/projects/views.py
@@ -44,9 +44,10 @@
     CreateUpdateUserProjectPermissionSerializer,
     ListUserPermissionGroupProjectPermissionSerializer,
     ListUserProjectPermissionSerializer,
+    ProjectCreateSerializer,
     ProjectListSerializer,
     ProjectRetrieveSerializer,
-    ProjectUpdateOrCreateSerializer,
+    ProjectUpdateSerializer,
 )
 
 
@@ -75,11 +76,13 @@ class ProjectViewSet(viewsets.ModelViewSet):
     permission_classes = [ProjectPermissions]
 
     def get_serializer_class(self):
-        if self.action == "retrieve":
-            return ProjectRetrieveSerializer
-        elif self.action in ("create", "update", "partial_update"):
-            return ProjectUpdateOrCreateSerializer
-        return ProjectListSerializer
+        serializers = {
+            "retrieve": ProjectRetrieveSerializer,
+            "create": ProjectCreateSerializer,
+            "update": ProjectUpdateSerializer,
+            "partial_update": ProjectUpdateSerializer,
+        }
+        return serializers.get(self.action, ProjectListSerializer)
 
     pagination_class = None
 
diff --git a/api/tests/integration/conftest.py b/api/tests/integration/conftest.py
index 7afc966ccdb8..0a0cf6495c04 100644
--- a/api/tests/integration/conftest.py
+++ b/api/tests/integration/conftest.py
@@ -56,11 +56,13 @@ def organisation_with_persist_trait_data_disabled(organisation):
 
 
 @pytest.fixture()
-def dynamo_enabled_project(admin_client, organisation):
+def dynamo_enabled_project(
+    admin_client: APIClient, organisation: Organisation, settings: SettingsWrapper
+):
+    settings.EDGE_ENABLED = True
     project_data = {
         "name": "Test Project",
         "organisation": organisation,
-        "enable_dynamo_db": True,
     }
     url = reverse("api-v1:projects:project-list")
     response = admin_client.post(url, data=project_data)