diff --git a/tools/addon/netdata.sh b/tools/addon/netdata.sh
index 4a2fae0d9..38768b008 100644
--- a/tools/addon/netdata.sh
+++ b/tools/addon/netdata.sh
@@ -42,7 +42,7 @@ function msg_ok() {
 function msg_error() { echo -e "${RD}✗ $1${CL}"; }
 
 # This function checks the version of Proxmox Virtual Environment (PVE) and exits if the version is not supported.
-# Supported: Proxmox VE 8.0.x – 8.9.x and 9.0 (NOT 9.1+)
+# Supported: Proxmox VE 8.0.x – 8.9.x and 9.0–9.1.x
 pve_check() {
   local PVE_VER
   PVE_VER="$(pveversion | awk -F'/' '{print $2}' | awk -F'-' '{print $1}')"
@@ -58,12 +58,12 @@ pve_check() {
     return 0
   fi
 
-  # Check for Proxmox VE 9.x: allow ONLY 9.0
+  # Check for Proxmox VE 9.x: allow 9.0–9.1.x
   if [[ "$PVE_VER" =~ ^9\.([0-9]+) ]]; then
     local MINOR="${BASH_REMATCH[1]}"
-    if ((MINOR != 0)); then
+    if ((MINOR < 0 || MINOR > 1)); then
       msg_error "This version of Proxmox VE is not yet supported."
-      msg_error "Supported: Proxmox VE version 9.0"
+      msg_error "Supported: Proxmox VE version 9.0–9.1.x"
       exit 1
     fi
     return 0
@@ -71,7 +71,7 @@ pve_check() {
 
   # All other unsupported versions
   msg_error "This version of Proxmox VE is not supported."
-  msg_error "Supported versions: Proxmox VE 8.0 – 8.x or 9.0"
+  msg_error "Supported versions: Proxmox VE 8.0 – 8.9 or 9.0–9.1.x"
   exit 1
 }
 
diff --git a/tools/pve/post-pve-install.sh b/tools/pve/post-pve-install.sh
index 739620c29..47d32a6bc 100644
--- a/tools/pve/post-pve-install.sh
+++ b/tools/pve/post-pve-install.sh
@@ -88,14 +88,14 @@ main() {
     fi
     start_routines_8
   elif [[ "$PVE_MAJOR" == "9" ]]; then
-    if ((PVE_MINOR != 0)); then
-      msg_error "Only Proxmox 9.0 is currently supported"
+    if ((PVE_MINOR < 0 || PVE_MINOR > 1)); then
+      msg_error "Only Proxmox 9.0-9.1.x is currently supported"
       exit 1
     fi
     start_routines_9
   else
     msg_error "Unsupported Proxmox VE major version: $PVE_MAJOR"
-    echo -e "Supported: 8.0–8.9.x and 9.0"
+    echo -e "Supported: 8.0–8.9.x and 9.0–9.1.x"
     exit 1
   fi
 }