diff --git a/test_runner/fixtures/pageserver/http.py b/test_runner/fixtures/pageserver/http.py
index add6c4288a..6dea0d923d 100644
--- a/test_runner/fixtures/pageserver/http.py
+++ b/test_runner/fixtures/pageserver/http.py
@@ -714,7 +714,7 @@ class PageserverHttpClient(requests.Session):
         )
         self.verbose_error(res)
 
-        assert res.status_code == 200
+        assert res.status_code in (200, 304)
 
     def evict_all_layers(self, tenant_id: TenantId, timeline_id: TimelineId):
         info = self.layer_map_info(tenant_id, timeline_id)