diff --git a/functions b/functions
index 900377e4f72486f6699ecf736f96adfbc04e92da..e8a049414bca2b14b158444dac1b94c2ca90d9be 160000
--- a/functions
+++ b/functions
@@ -1 +1 @@
-Subproject commit 900377e4f72486f6699ecf736f96adfbc04e92da
+Subproject commit e8a049414bca2b14b158444dac1b94c2ca90d9be
diff --git a/host_vars/tiffany b/host_vars/tiffany
index 5cd2f4bf384bdfba3962bbb0b0d03b89720b5e4e..2c0ce7b4d57bfb3d5ac9db26451a3f9397226c38 100644
--- a/host_vars/tiffany
+++ b/host_vars/tiffany
@@ -6,15 +6,15 @@ motd_lines:
   - "Öffentliche IPs: {{ansible_enp35s0.ipv4.address}} / {{ansible_enp35s0.ipv6[0].address}}"
 
 debian_sources: 
-  - "deb http://deb.debian.org/debian/ buster main non-free contrib"
-  - "deb http://security.debian.org/debian-security buster/updates main contrib non-free"
-  - "deb http://deb.debian.org/debian/ buster-updates main contrib non-free"
-  - "deb http://download.proxmox.com/debian/pve buster pve-no-subscription"
+  - "deb http://ftp2.de.debian.org/debian/ bullseye main contrib non-free"
+  - "deb http://ftp.debian.org/debian bullseye-updates main contrib non-free"
+  - "deb http://security.debian.org/ bullseye-security main contrib non-free"
+  - "deb http://download.proxmox.com/debian/pve bullseye pve-no-subscription"
 
 debian_keys_id:
 
 debian_keys_url:
-  - "http://download.proxmox.com/debian/proxmox-ve-release-6.x.gpg"
+  - "http://download.proxmox.com/debian/proxmox-release-bullseye.gpg"
 
 
 # Art des Hosts: physical, vm, docker 
diff --git a/host_vars/verwaltung b/host_vars/verwaltung
index 4fbe9612bd679d6b2bdbee79349c4abdce43d634..670b831256a9b6bc8055b676033ad2509db27f03 100644
--- a/host_vars/verwaltung
+++ b/host_vars/verwaltung
@@ -6,9 +6,10 @@ motd_lines:
   - "Öffentliche IPs: {{ansible_ens18.ipv4.address}} / {{ansible_ens18.ipv6[0].address}}"
 
 debian_sources: 
-  - "deb http://ftp2.de.debian.org/debian/ buster main contrib non-free"
-  - "deb http://security.debian.org/ buster/updates main contrib non-free"
-  - "deb https://download.docker.com/linux/debian buster stable"
+  - "deb http://ftp2.de.debian.org/debian/ bullseye main contrib non-free"
+  - "deb http://ftp.debian.org/debian bullseye-updates main contrib non-free"
+  - "deb http://security.debian.org/ bullseye-security main contrib non-free"
+  - "deb https://download.docker.com/linux/debian bullseye stable"
 
 debian_keys_id:
   
diff --git a/host_vars/webserver b/host_vars/webserver
index 5b646c3192287db02b501fe9862fb554e0bf4fbf..5a736d90dc0267f8628eb575716b6f3007fb1789 100644
--- a/host_vars/webserver
+++ b/host_vars/webserver
@@ -6,10 +6,10 @@ motd_lines:
   - "Öffentliche IPs: {{ansible_ens18.ipv4.address}} / {{ansible_ens18.ipv6[0].address}}"
 
 debian_sources: 
-  - "deb http://ftp2.de.debian.org/debian/ buster main contrib non-free"
-  - "deb http://security.debian.org/ buster/updates main contrib non-free"
-  - "deb https://download.docker.com/linux/debian buster stable"
-  - "deb http://deb.debian.org/debian buster-backports main"
+  - "deb http://ftp2.de.debian.org/debian/ bullseye main contrib non-free"
+  - "deb http://ftp.debian.org/debian bullseye-updates main contrib non-free"
+  - "deb http://security.debian.org/ bullseye-security main contrib non-free"
+  - "deb https://download.docker.com/linux/debian bullseye stable"
 
 debian_keys_id: