diff --git a/README.md b/README.md
index 30da4d6..deb2f60 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,7 @@ gfwlist2dnsmasq
 Intro
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 Just another script to auto-generate dnsmasq ipset rules using gfwlist
+Notification: Need python2, do not use python3
 
 Using:
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