diff --git a/my/coding/github.py b/my/coding/github.py
index cd9a2ed..d609c9e 100644
--- a/my/coding/github.py
+++ b/my/coding/github.py
@@ -211,8 +211,17 @@ def iter_gdpr_events() -> Iterator[Res[Event]]:
                 yield e
 
 
-def iter_backup_events():
-    model = get_model()
+# TODO FIXME shit, cachew would need to support exceptions??
+# TODO ugh. union types are sort of inevitable..
+
+# TODO cachew: perhaps warn when function got no params? might end up as TODO
+# TODO instead of hash, use 'deps'?? makes it a bit less misleading..
+
+# TODO make cahcew optional, warn if it's not available
+# TODO dependencies should involve our package and source packages somehow? that's very hard in general of course
+from cachew import cachew
+@cachew(paths.github.cache_dir, hashf=lambda model: model.sources)
+def iter_backup_events(model=get_model()) -> Iterator[Event]:
     for d in model.events():
         yield _parse_event(d)