diff --git a/pyproject.toml b/pyproject.toml
index 26e147b4..3051e3a5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "vitessce"
-version = "3.7.5"
+version = "3.7.6"
 authors = [
   { name="Mark Keller", email="mark_keller@hms.harvard.edu" },
 ]
diff --git a/src/vitessce/wrappers.py b/src/vitessce/wrappers.py
index 208d41a5..c05bd532 100644
--- a/src/vitessce/wrappers.py
+++ b/src/vitessce/wrappers.py
@@ -74,6 +74,7 @@ def __init__(self, **kwargs):
         self.routes = []
         self.is_remote = False  # TODO: change to needs_localhost_serving for clarity
         self.is_store = False  # TODO: change to needs_store_registration for clarity
+        self.is_zip = False
         self.file_def_creators = []
         self.base_dir = None
         self.stores = {}
@@ -1326,6 +1327,12 @@ def make_routes(self, dataset_uid, obj_i):
                     *self.get_local_file_route(dataset_uid, obj_i, self._adata_path, self.local_file_uid),
                     *self.get_local_file_route(dataset_uid, obj_i, self._ref_path, self.local_ref_uid)
                 ]
+            elif self.is_zip:
+                return [
+                    # TODO: modify so that the .zip file extension is used
+                    # (not necessary, but could help with debugging or with base_dir mode)
+                    *self.get_local_file_route(dataset_uid, obj_i, self._adata_path, self.local_dir_uid)
+                ]
             else:
                 return self.get_local_dir_route(dataset_uid, obj_i, self._adata_path, self.local_dir_uid)