diff --git a/squid/files/whitelist-evolinux.conf b/squid/files/whitelist-evolinux.conf
index 063df876..407e7645 100644
--- a/squid/files/whitelist-evolinux.conf
+++ b/squid/files/whitelist-evolinux.conf
@@ -13,6 +13,9 @@ http://pear.php.net/.*
 # Let's Encrypt
 http://.*.letsencrypt.org/.*
 
+# Other OCSP endpoint
+http://ocsp.usertrust.com/.*
+
 ### CMS / Wordpress / Drupal / ...
 # Wordpress
 http://.*akismet.com/.*