diff --git a/neutron/templates/bin/_neutron-ovn-db-sync.sh.tpl b/neutron/templates/bin/_neutron-ovn-db-sync.sh.tpl
index 918375a482..f05be248cc 100644
--- a/neutron/templates/bin/_neutron-ovn-db-sync.sh.tpl
+++ b/neutron/templates/bin/_neutron-ovn-db-sync.sh.tpl
@@ -31,4 +31,5 @@ neutron-ovn-db-sync-util \
         --config-file /etc/neutron/l2gw_plugin.ini \
 {{- end }}
         --config-file /etc/neutron/plugins/ml2/ml2_conf.ini \
+        --config-dir /etc/neutron/neutron.conf.d \
         --ovn-neutron_sync_mode "$1"
diff --git a/releasenotes/notes/neutron-4f9263300df02c9b.yaml b/releasenotes/notes/neutron-4f9263300df02c9b.yaml
new file mode 100644
index 0000000000..90ebbdfde8
--- /dev/null
+++ b/releasenotes/notes/neutron-4f9263300df02c9b.yaml
@@ -0,0 +1,5 @@
+---
+neutron:
+  - |
+    Add missing `--config-dir` option to `neutron-ovn-db-sync-util`.
+...