diff --git a/jjb/defaults.yaml b/jjb/defaults.yaml
index 4956258..77b33a3 100644
--- a/jjb/defaults.yaml
+++ b/jjb/defaults.yaml
@@ -35,7 +35,7 @@
     artifact-num-to-keep: 30
 
     # How long to keep builds and artifacts for jobs that generate a lot of artifacts
-    big-build-days-to-keep: 5
+    big-build-days-to-keep: 10
     big-artifact-num-to-keep: 5
 
     # list of artifacts to archive