diff --git a/package/gluon-autoupdater/check_site.lua b/package/gluon-autoupdater/check_site.lua
index 4d6302cd..1d8996f0 100644
--- a/package/gluon-autoupdater/check_site.lua
+++ b/package/gluon-autoupdater/check_site.lua
@@ -5,7 +5,6 @@ local function check_branch(k, _)
 
    need_string(prefix .. 'name')
    need_string_array(prefix .. 'mirrors')
-   need_number(prefix .. 'probability')
    need_number(prefix .. 'good_signatures')
    need_string_array(prefix .. 'pubkeys')
 end
diff --git a/package/gluon-autoupdater/files/lib/gluon/cron/autoupdater b/package/gluon-autoupdater/files/lib/gluon/cron/autoupdater
deleted file mode 100644
index 1beebca1..00000000
--- a/package/gluon-autoupdater/files/lib/gluon/cron/autoupdater
+++ /dev/null
@@ -1 +0,0 @@
-0 * * * * /usr/sbin/autoupdater
diff --git a/package/gluon-autoupdater/files/lib/gluon/upgrade/autoupdater/invariant/010-autoupdater b/package/gluon-autoupdater/files/lib/gluon/upgrade/autoupdater/invariant/010-autoupdater
index b205f411..5cd11c05 100755
--- a/package/gluon-autoupdater/files/lib/gluon/upgrade/autoupdater/invariant/010-autoupdater
+++ b/package/gluon-autoupdater/files/lib/gluon/upgrade/autoupdater/invariant/010-autoupdater
@@ -12,7 +12,6 @@ for name, config in pairs(site.autoupdater.branches) do
 		  {
 			  name = config.name,
 			  mirror = config.mirrors,
-			  probability = config.probability,
 			  good_signatures = config.good_signatures,
 			  pubkey = config.pubkeys,
 		  }
@@ -42,3 +41,13 @@ c:set('autoupdater', 'settings', 'version_file', '/lib/gluon/release')
 
 c:save('autoupdater')
 c:commit('autoupdater')
+
+
+local autoupdater_util = require 'autoupdater.util'
+autoupdater_util.randomseed()
+
+
+-- Perform updates at a random time between 04:00 and 05:00
+local f = io.open('/lib/gluon/cron/autoupdater', 'w')
+f:write(string.format('%i 4 * * * /usr/sbin/autoupdater\n', math.random(0, 59)))
+f:close()