diff --git a/tools/addon/netdata.sh b/tools/addon/netdata.sh
index f3e54ff6..1f2d598f 100644
--- a/tools/addon/netdata.sh
+++ b/tools/addon/netdata.sh
@@ -51,11 +51,11 @@ pve_check() {
   PVE_VER="$(pveversion | awk -F'/' '{print $2}' | awk -F'-' '{print $1}')"
 
   # Proxmox VE 8.x: allow 8.0 – 8.9
-  if [[ "$PVE_VER" =~ ^8\.([0-9]+)$ ]]; then
+  if [[ "$PVE_VER" =~ ^9\.([0-9]+)(\.[0-9]+)?$ ]]; then
     local MINOR="${BASH_REMATCH[1]}"
-    if ((MINOR < 0 || MINOR > 9)); then
+    if ((MINOR != 0)); then
       msg_error "Unsupported Proxmox VE version: $PVE_VER"
-      msg_error "Supported versions: 8.0 – 8.9 or 9.0"
+      msg_error "Supported versions: 8.0 – 8.9 or 9.0.x"
       exit 1
     fi
     return 0