diff --git a/local/config/vufind/httpd-vufind.conf b/local/config/vufind/httpd-vufind.conf
index e7379f0..9224fd4 100644
--- a/local/config/vufind/httpd-vufind.conf
+++ b/local/config/vufind/httpd-vufind.conf
@@ -53,6 +53,12 @@ AliasMatch ^/resources/cache/(.*)$ /usr/local/vufind/local/cache/public/$1
   <ElseIf "%{HTTP_USER_AGENT} == 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36'">
       Require all denied
   </ElseIf>
+  <ElseIf "%{HTTP_USER_AGENT} =~ /dataforseo/">
+    Require all denied
+  </ElseIf>
+  <ElseIf "%{HTTP_USER_AGENT} =~ /181121/">
+    Require all denied
+  </ElseIf>
   <Else>
     Require all granted
   </Else>