diff --git a/bugsink/settings/development.py b/bugsink/settings/development.py
index 72114a9..1daf5ea 100644
--- a/bugsink/settings/development.py
+++ b/bugsink/settings/development.py
@@ -125,6 +125,8 @@ BUGSINK = {
     # set MAX_EVENTS* very high to be able to do serious performance testing (which I do often in my dev environment)
     "MAX_EVENTS_PER_PROJECT_PER_5_MINUTES": 1_000_000,
     "MAX_EVENTS_PER_PROJECT_PER_HOUR": 50_000_000,
+
+    "KEEP_ARTIFACT_BUNDLES": True,  # in development: useful to preserve sourcemap uploads
 }