diff --git a/chroot_version_hooks.d/26_scrub_old_pkgs b/chroot_version_hooks.d/26_scrub_old_pkgs
new file mode 100644
index 0000000000..829e5b9315
--- /dev/null
+++ b/chroot_version_hooks.d/26_scrub_old_pkgs
@@ -0,0 +1,28 @@
+# Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# We've been dropping packages of late from the target, so make sure the
+# old stuff gets cleaned out.
+
+pkgs=(
+  dev-libs/shflags
+  mail-mta/ssmtp
+  net-libs/gssdp
+  net-libs/gupnp
+  net-mail/mailbase
+  sys-fs/sysfsutils
+  sys-process/cronbase
+  sys-process/vixie-cron
+)
+
+for board_root in /build/* ; do
+  board=${board_root##*/}
+  emerge_board=$(type -P emerge-${board} 2>/dev/null || true)
+  if [[ -x "${emerge_board}" ]]; then
+    CLEAN_DELAY=0 ${emerge_board} -q --unmerge ${pkgs[@]} || true
+    eclean-${board} -d packages || true
+  fi
+done
+
+exit 0