diff --git a/hosts/blacklist.txt b/hosts/blacklist.txt
index 33b47fe..6f1c1d1 100755
--- a/hosts/blacklist.txt
+++ b/hosts/blacklist.txt
@@ -1,6 +1,13 @@
 ## This blacklist maintaince by @ookangzheng
 ## Attribution-NonCommercial 4.0 International (CC BY-NC-SA 4.0)
 
+# Scam fake android warning
+system-update-new-2021.com
+buildingdoodlesquare.com
+envyindebted.com
+audacitydipping.com
+derangemathsreply.com
+
 # Apple in-mail safebrowsing url check
 token.safebrowsing.apple
 safebrowsing.g.aaplimg.com