diff --git a/portage/make.conf b/portage/make.conf
index c51b259..a0f9c2e 100644
--- a/portage/make.conf
+++ b/portage/make.conf
@@ -3,7 +3,7 @@
 # Copyright 2022-2023 Inference
 # SPDX-License-Identifier: BSD-3-Clause-Clear
 
-# Version: 2.4.0.12
+# Version: 2.5.0.13
 
 
 # System
@@ -24,6 +24,7 @@ LC_MESSAGES=C
 GENTOO_MIRRORS="rsync://mirror.bytemark.co.uk/gentoo/ rsync://rsync.mirrorservice.org/sites/distfiles.gentoo.org/ rsync://mirror.init7.net/gentoo/ rsync://ftp.iij.ad.jp/pub/linux/gentoo/ rsync://ftp.jaist.ac.jp/pub/Linux/gentoo/"
 
 ## Emerge
+CLEAN_DELAY="10"
 EMERGE_DEFAULT_OPTS="--ask --jobs 1 --load-average 5 --verbose"
 FEATURES="buildpkg ipc-sandbox network-sandbox pid-sandbox sandbox"
 MAKEOPTS="--jobs 4"