diff --git a/ctl/server.go b/ctl/server.go
index 6c885d213..2f7ea063c 100644
--- a/ctl/server.go
+++ b/ctl/server.go
@@ -110,4 +110,7 @@ func BuildServerFlags(cmd *cobra.Command, srv *server.Command) {
 	flags.DurationVar((*time.Duration)(&srv.Config.Postgres.WriteTimeout), "postgres.write-timeout", time.Duration(srv.Config.Postgres.WriteTimeout), "Timeout for writes on a postgres connection. (set 0 to disable)")
 	flags.Uint32Var(&srv.Config.Postgres.MaxStartupSize, "postgres.max-startup-size", srv.Config.Postgres.MaxStartupSize, "Maximum acceptable size of a postgres startup packet, in bytes. (set 0 to disable)")
 	flags.Uint16Var(&srv.Config.Postgres.ConnectionLimit, "postgres.connection-limit", srv.Config.Postgres.ConnectionLimit, "Maximum number of simultaneous postgres connections to allow. (set 0 to disable)")
+
+	// Disk Usage refresh rate in minutes for ui/usage http endpoint
+	flags.IntVar(&srv.Config.DiskUsageRefreshRate, "disk-usage-refresh-rate", srv.Config.DiskUsageRefreshRate, "Number in minutes between recalculations of disk usage cache")
 }
diff --git a/server/config.go b/server/config.go
index f59040271..d6c12e881 100644
--- a/server/config.go
+++ b/server/config.go
@@ -224,6 +224,9 @@ type Config struct {
 
 	// LookupDBDSN is an external database to connect to for `ExternalLookup` queries.
 	LookupDBDSN string `toml:"lookup-db-dsn"`
+
+	// Disk Usage refresh rate in minutes for ui/usage http endpoint
+	DiskUsageRefreshRate int `toml:"disk-ussage-refresh-rate"`
 }
 
 // MustValidate checks that all ports in a Config are unique and not zero.