diff --git a/.zuul.d/project-template.yaml b/.zuul.d/project-template.yaml
index 51cf75baf4..c98b514329 100644
--- a/.zuul.d/project-template.yaml
+++ b/.zuul.d/project-template.yaml
@@ -19,3 +19,4 @@
       - ^.*requirements-py[2,3].txt$
       - ^doc/requirements.txt$
       - playbooks/requirements-check.yaml
+      - ^lower-constraints.txt$