diff --git a/repo_refs.yaml b/repo_refs.yaml
index d821c99..601180e 100644
--- a/repo_refs.yaml
+++ b/repo_refs.yaml
@@ -25,3 +25,7 @@ repos:
     - tripleo-ci
 
 gerrit_refs:
+    tripleo-heat-templates:
+        # Compute all hosts matrix once.
+        # https://review.openstack.org/#/c/97703/
+        - 03/97703/3