diff --git a/npm_install.py b/npm_install.py
index 51bea14..968c62f 100644
--- a/npm_install.py
+++ b/npm_install.py
@@ -213,7 +213,7 @@ def validate_supported_os():
 
         # Debian derivatives
         'proxmox': ['7', '8', '9'],
-        'devuan': ['4', '5'],
+        'devuan': ['4', '5', '6'],
         'armbian': ['23.02', '24.02'],
         'mx': ['21', '23'],
         'kali': ['2023.1', '2024.1'],
@@ -254,6 +254,10 @@ def validate_supported_os():
         print(f"   Detected: {OSREL.get('PRETTY', 'Unknown')}")
         print(f"   Supported versions: {', '.join(supported_versions)}")
         print(f"\n   This version may work but is not officially tested.")
+        print(f"   Prerequisites:")
+        print(f"   • Angie packages must be available for your distribution")
+        print(f"   • Check: https://en.angie.software/angie/docs/installation/oss_packages/")
+        print(f"   • Your system should be Debian/Ubuntu compatible (apt-based)")
         
         response = input("\n   Continue anyway? [y/N]: ").strip().lower()
         if response not in ['y', 'yes']:
@@ -263,7 +267,6 @@ def validate_supported_os():
     else:
         print(f"✓ Supported OS detected: {OSREL.get('PRETTY', 'Unknown')}\n")
 
-
 def comment_x_served_by_step(path="/etc/angie/conf.d/include/proxy.conf"):
     p = Path(path)
     if not p.exists():