diff --git a/net/haproxy/pkg-descr b/net/haproxy/pkg-descr
index 0af36b5e2..75ae2c0e4 100644
--- a/net/haproxy/pkg-descr
+++ b/net/haproxy/pkg-descr
@@ -18,7 +18,7 @@ Added:
 * add new condition: HTTP method
 * support custom HTTP status code in "http-request deny" rules
 * add new backend option to control PROXY protocol for health checks (#2909)
-* add support for new map file types: beg,end,int,ip,reg,str (#3641)
+* add support for new map file types: beg,end,int,ip,reg,str,sub (#3641)
 * add support for more sample fetches: quic_enabled, stopping, wait_end (#3702)
 * add support for HTTP compression (#4867)
 * add all action keywords for http-request/-response and tcp-request/-response rules
diff --git a/net/haproxy/src/opnsense/mvc/app/models/OPNsense/HAProxy/HAProxy.xml b/net/haproxy/src/opnsense/mvc/app/models/OPNsense/HAProxy/HAProxy.xml
index fb4a4b8e0..b6ee4174e 100644
--- a/net/haproxy/src/opnsense/mvc/app/models/OPNsense/HAProxy/HAProxy.xml
+++ b/net/haproxy/src/opnsense/mvc/app/models/OPNsense/HAProxy/HAProxy.xml
@@ -4359,6 +4359,7 @@
                         <ip>ip - IPs</ip>
                         <reg>reg - Regular Expressions</reg>
                         <str>str - Strings</str>
+                        <sub>sub - substring matches requested value</sub>
                     </OptionValues>
                 </type>
                 <content type="TextField">