diff --git a/profiles/templates/3.5/6_ac_update_sync/world/0-ini b/profiles/templates/3.5/6_ac_update_sync/world/0-ini
index 8a11811..2c48b9c 100644
--- a/profiles/templates/3.5/6_ac_update_sync/world/0-ini
+++ b/profiles/templates/3.5/6_ac_update_sync/world/0-ini
@@ -1,4 +1,4 @@
 # Calculate path=/var/lib/calculate name=ini.env format=samba cl_update_world==rebuild||cl_update_world==merge||ini(overlay-container.world)==
 
 [overlay-container]
-world = 20180703
+world = 20210423
diff --git a/profiles/templates/3.5/6_ac_update_sync/world/create/xorg b/profiles/templates/3.5/6_ac_update_sync/world/create/xorg
index b74f381..e1ec9f9 100644
--- a/profiles/templates/3.5/6_ac_update_sync/world/create/xorg
+++ b/profiles/templates/3.5/6_ac_update_sync/world/create/xorg
@@ -13,4 +13,6 @@ x11-apps/xsetroot
 x11-base/xorg-server
 x11-misc/edid-data
 x11-misc/sddm
+# missing dependency for x11-drivers/nvidia-drivers
+sys-devel/m4
 #in#
diff --git a/profiles/templates/3.5/6_ac_update_sync/world/update/2021/.calculate_directory b/profiles/templates/3.5/6_ac_update_sync/world/update/2021/.calculate_directory
new file mode 100644
index 0000000..486aa9a
--- /dev/null
+++ b/profiles/templates/3.5/6_ac_update_sync/world/update/2021/.calculate_directory
@@ -0,0 +1 @@
+# Calculate append=skip ini(overlay-container.world)<20220101
diff --git a/profiles/templates/3.5/6_ac_update_sync/world/update/2021/20210423 b/profiles/templates/3.5/6_ac_update_sync/world/update/2021/20210423
new file mode 100644
index 0000000..9543ca8
--- /dev/null
+++ b/profiles/templates/3.5/6_ac_update_sync/world/update/2021/20210423
@@ -0,0 +1,7 @@
+# Calculate format=world name=world ini(overlay-distros.world)<#-cut()-#
+
+#-ini(overlay-distros.world,#-cut()-#)-#
+
+#?in(os_linux_pkglist, CCG)!=#
+sys-devel/m4
+#in#