diff --git a/environments/enable-internal-tls.yaml b/environments/enable-internal-tls.yaml
index c01b4888e2..6e912faa28 100644
--- a/environments/enable-internal-tls.yaml
+++ b/environments/enable-internal-tls.yaml
@@ -3,5 +3,6 @@
 parameter_defaults:
   EnableInternalTLS: true
 resource_registry:
+  OS::TripleO::Services::HAProxyInternalTLS: ../puppet/services/haproxy-internal-tls-certmonger.yaml
   OS::TripleO::Services::ApacheTLS: ../puppet/services/apache-internal-tls-certmonger.yaml
   OS::TripleO::Services::MySQLTLS: ../puppet/services/database/mysql-internal-tls-certmonger.yaml