diff --git a/admin/autoupdater/files/usr/lib/autoupdater/upgrade.d/95drop_caches b/admin/autoupdater/files/usr/lib/autoupdater/upgrade.d/95drop_caches
new file mode 100755
index 0000000..814159f
--- /dev/null
+++ b/admin/autoupdater/files/usr/lib/autoupdater/upgrade.d/95drop_caches
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+sync
+sysctl -w vm.drop_caches=3