diff --git a/public_suffix_list.dat b/public_suffix_list.dat
index 1cd91fc82..541dd678e 100644
--- a/public_suffix_list.dat
+++ b/public_suffix_list.dat
@@ -15654,6 +15654,7 @@ wmflabs.org
 // Submitted by William Harrison <publicsuffix@wdharrison.com>
 wdh.app
 preview.wdh.app
+t.hrsn.dev
 t.hrsn.net
 
 // WISP : https://wisp.gg