1 files changed, 9 insertions, 2 deletions
diff --git a/src/hydrilla/server/serve.py b/src/hydrilla/server/serve.py
index 7c9789a..00682aa 100644
--- a/src/hydrilla/server/serve.py
+++ b/src/hydrilla/server/serve.py
@@ -141,10 +141,17 @@ def get_resource_or_mapping(item_type: str, identifier: str) \
     # no need for send_from_directory(); path is safe, constructed by us
     info_path = f'{info.identifier}/{versions.version_string(info.version)}'
     file_path = get_malcontent().malcontent_dir_path / item_type / info_path
+
+    if flask.__version__[0:2] in ('0.', '1.'):
+        caching_args = {'add_etags': False, 'cache_timeout': 0}
+    else:
+        caching_args = {'etag': False}
+
     return flask.send_file(
         str(file_path),
-        mimetype = 'application/json',
-        etag     = False
+        mimetype    = 'application/json',
+        conditional = False,
+        **caching_args # type: ignore
     )
 
 @bp.route('/mapping/<string:identifier_dot_json>')