diff --git a/inventory/builders b/inventory/builders
index d1f4ae2003..d2249420a1 100644
--- a/inventory/builders
+++ b/inventory/builders
@@ -223,10 +223,6 @@ buildhw-x86-13.iad2.fedoraproject.org
 buildhw-x86-14.iad2.fedoraproject.org
 buildhw-x86-15.iad2.fedoraproject.org
 buildhw-x86-16.iad2.fedoraproject.org
-buildhw-x86-21.iad2.fedoraproject.org
-buildhw-x86-22.iad2.fedoraproject.org
-buildhw-x86-23.iad2.fedoraproject.org
-buildhw-x86-24.iad2.fedoraproject.org
 
 #
 # These are primary koji builders.