diff --git a/src/onlyoffice/constants-service.conf b/src/onlyoffice/constants-service.conf
index d135850..4322e18 100644
--- a/src/onlyoffice/constants-service.conf
+++ b/src/onlyoffice/constants-service.conf
@@ -8,7 +8,7 @@
 # This file contains the project constants on service level
 
 # Debian Version, which will be installed
-LXC_TEMPLATE_VERSION="debian-11-standard"
+LXC_TEMPLATE_VERSION="debian-12-standard"
 
 # Create sharefs mountpoint
 LXC_MP="0"
diff --git a/src/onlyoffice/install-service.sh b/src/onlyoffice/install-service.sh
index 2677191..4b1627a 100644
--- a/src/onlyoffice/install-service.sh
+++ b/src/onlyoffice/install-service.sh
@@ -11,7 +11,7 @@ source /root/constants-service.conf
 
 ONLYOFFICE_DB_PASS=$(random_password)
 
-apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys CB2DE8E5
+curl -fsSL https://download.onlyoffice.com/GPG-KEY-ONLYOFFICE | gpg --dearmor | tee /etc/apt/trusted.gpg.d/onlyoffice.gpg >/dev/null
 echo "deb https://download.onlyoffice.com/repo/debian squeeze main" > /etc/apt/sources.list.d/onlyoffice.list
 
 cat > /etc/apt/preferences.d/onlyoffice << EOF