diff --git a/tildes/static/robots.txt b/tildes/static/robots.txt
index a3b8c00..47bb3cd 100644
--- a/tildes/static/robots.txt
+++ b/tildes/static/robots.txt
@@ -1,6 +1,12 @@
+User-agent: AhrefsBot
+Disallow: /
+
 User-agent: BLEXBot
 Disallow: /
 
+User-agent: Buck
+Disallow: /
+
 User-agent: dotbot
 Disallow: /
 
@@ -9,3 +15,6 @@ Disallow: /
 
 User-agent: MegaIndex
 Disallow: /
+
+User-agent: SemrushBot
+Disallow: /