diff --git a/ubuntu/erlking.silvestris.systems.yml b/ubuntu/erlking.silvestris.systems.yml
index be47616..98abfdd 100644
--- a/ubuntu/erlking.silvestris.systems.yml
+++ b/ubuntu/erlking.silvestris.systems.yml
@@ -28,6 +28,7 @@
         - ssl_certificate_key "/etc/ssl/letsencrypt/nullrouted.space.pem"
         - include snippets/sslstapling_hsts.conf
         - include snippets/wp_with_supercache.conf
+        - include snippets/blockbots.conf
       entropynet.net.http:
         - listen *:80
         - listen [::]:80
@@ -45,6 +46,7 @@
         - ssl_certificate "/etc/ssl/letsencrypt/entropynet.net.crt"
         - ssl_certificate_key "/etc/ssl/letsencrypt/entropynet.net.pem"
         - include snippets/sslstapling_hsts.conf
+        - include snippets/blockbots.conf
       twoshadesofbrown.com.http:
         - listen *:80
         - listen [::]:80
@@ -63,6 +65,7 @@
         - ssl_certificate_key "/etc/ssl/letsencrypt/twoshadesofbrown.com.pem"
         - include snippets/sslstapling_hsts.conf
         - include snippets/wp_with_supercache.conf
+        - include snippets/blockbots.conf
       wiki.packetcat.ca.http:
         - listen *:80
         - listen [::]:80
@@ -79,6 +82,7 @@
         - ssl_certificate "/etc/ssl/letsencrypt/wiki.packetcat.ca.crt"
         - ssl_certificate_key "/etc/ssl/letsencrypt/wiki.packetcat.ca.pem"
         - include snippets/sslstapling_hsts.conf
+        - include snippets/blockbots.conf
         - location ~ /(data|conf|bin|inc)/ {
             deny all;
           }
@@ -110,6 +114,7 @@
         - ssl_certificate "/etc/ssl/letsencrypt/sadiqsaif.com.crt"
         - ssl_certificate_key "/etc/ssl/letsencrypt/sadiqsaif.com.pem"
         - include snippets/sslstapling_hsts.conf
+        - include snippets/blockbots.conf
       sadiqsaif.ca.http:
         - listen *:80
         - listen [::]:80
@@ -142,6 +147,7 @@
         - ssl_certificate_key "/etc/ssl/letsencrypt/ultonomy.com.pem"
         - include snippets/sslstapling_hsts.conf
         - include snippets/wp_with_supercache.conf
+        - include snippets/blockbots.conf
       wallabag.packetcat.ca.http:
         - listen *:80
         - listen [::]:80
@@ -158,6 +164,7 @@
         - ssl_certificate "/etc/ssl/letsencrypt/wallabag.packetcat.ca.crt"
         - ssl_certificate_key "/etc/ssl/letsencrypt/wallabag.packetcat.ca.pem"
         - include snippets/sslstapling_hsts.conf
+        - include snippets/blockbots.conf
         - location / {
             try_files $uri /app.php$is_args$args;
           }
@@ -231,3 +238,8 @@
         - fastcgi_cache_use_stale error timeout invalid_header http_500
         - fastcgi_ignore_headers Cache-Control Expires Set-Cookie
         - add_header rt-Fastcgi-Cache $upstream_cache_status
+    nginx_snippets:
+      blockbots:
+        - if ($http_user_agent ~* (thesis-research-bot|fidget-spinner-bot) ) {
+            return 403;
+          }
\ No newline at end of file