diff --git a/glance/files/heka.toml b/glance/files/heka.toml
index 2ce9d51..18a212c 100644
--- a/glance/files/heka.toml
+++ b/glance/files/heka.toml
@@ -5,6 +5,7 @@
 file_match = 'glance-registry\.log\.?(?P<Index>\d+)?(.gz)?'
 priority = ["^Index"]
 decoder = "glance"
+oldest_duration = "168h"
 
 [glance]
 type = "SandboxDecoder"