diff --git a/README.md b/README.md
index 0538822..51af7e1 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,7 @@
 # Custom DNS Hostname resolution on a UDM PRO
+
+# Not for v3.x UniFiOS
+
 This requires the use of the UniFiOS-Utilities, more specificially just the on-boot-script portion in order to run persisitent scripts at boot
 
 https://github.com/unifi-utilities/unifios-utilities