diff --git a/blocklists/mastodon.art.csv b/blocklists/mastodon.art.csv
index de79d98..393d626 100644
--- a/blocklists/mastodon.art.csv
+++ b/blocklists/mastodon.art.csv
@@ -11,6 +11,7 @@ domain,severity,reject_media,reject_reports,public_comment,obfuscate
 1745.info,suspend,False,False,,False
 3q3.de,suspend,False,False,,False
 4aem.com,suspend,False,False,,False
+503junk.house,suspend,False,False,,False
 5dollah.click,suspend,False,False,,False
 80percent.social,suspend,False,False,,False
 8777.ch,suspend,False,False,,False
diff --git a/blocklists/mastodon/mastodon.art.csv b/blocklists/mastodon/mastodon.art.csv
index bc36632..2c3b57b 100644
--- a/blocklists/mastodon/mastodon.art.csv
+++ b/blocklists/mastodon/mastodon.art.csv
@@ -11,6 +11,7 @@
 1745.info,suspend,false,false,,false
 3q3.de,suspend,false,false,,false
 4aem.com,suspend,false,false,,false
+503junk.house,suspend,false,false,,false
 5dollah.click,suspend,false,false,,false
 80percent.social,suspend,false,false,,false
 8777.ch,suspend,false,false,,false
diff --git a/blocklists/other/domain_audit_file.csv b/blocklists/other/domain_audit_file.csv
index f8860d7..0f815eb 100644
--- a/blocklists/other/domain_audit_file.csv
+++ b/blocklists/other/domain_audit_file.csv
@@ -28,6 +28,7 @@ domain,count,percent
 4aem.com,4,66.66666666666666
 4chan.icu,2,33.33333333333333
 4qq.org,1,16.666666666666664
+503junk.house,1,16.666666666666664
 5dollah.click,6,100.0
 62x54r.ru,1,16.666666666666664
 7td.org,2,33.33333333333333