diff --git a/install/proxmox-datacenter-manager-install.sh b/install/proxmox-datacenter-manager-install.sh
index 5e6b2e3e5..6c62976e9 100644
--- a/install/proxmox-datacenter-manager-install.sh
+++ b/install/proxmox-datacenter-manager-install.sh
@@ -14,12 +14,14 @@ network_check
 update_os
 
 msg_info "Installing Proxmox Datacenter Manager"
-curl -fsSL https://enterprise.proxmox.com/debian/proxmox-release-bookworm.gpg | gpg --dearmor -o /etc/apt/keyrings/proxmox-release-bookworm.gpg
-echo "deb [signed-by=/etc/apt/keyrings/proxmox-release-bookworm.gpg] http://download.proxmox.com/debian/pdm bookworm pdm-test  " >/etc/apt/sources.list.d/proxmox-release-bookworm.list
+curl -fsSL https://enterprise.proxmox.com/debian/proxmox-archive-keyring-trixie.gpg -o /usr/share/keyrings/proxmox-archive-keyring.gpg
+echo "deb [signed-by=/usr/share/keyrings/proxmox-archive-keyring.gpg] http://download.proxmox.com/debian/pdm bookworm pdm-test  " >/etc/apt/sources.list.d/pdm-test.list
 $STD apt-get update
-$STD apt-get install -y \
-  proxmox-datacenter-manager \
-  proxmox-datacenter-manager-ui
+DEBIAN_FRONTEND=noninteractive
+$STD apt-get -o Dpkg::Options::="--force-confdef" \
+        -o Dpkg::Options::="--force-confold" \
+        install -y proxmox-datacenter-manager \
+        proxmox-datacenter-manager-ui
 msg_ok "Installed Proxmox Datacenter Manager"
 
 motd_ssh