diff --git a/images/neutron/Dockerfile b/images/neutron/Dockerfile
index 7d771a2..a812984 100644
--- a/images/neutron/Dockerfile
+++ b/images/neutron/Dockerfile
@@ -7,7 +7,8 @@
 ARG NEUTRON_GIT_REF=81c8fd369b5ba58e53b4af21afbb95e2897dc42e
 ADD --keep-git-dir=true https://opendev.org/openstack/neutron.git#${NEUTRON_GIT_REF} /src/neutron
 RUN git -C /src/neutron fetch --unshallow
-ADD --keep-git-dir=true https://opendev.org/openstack/neutron-vpnaas.git#stable/2023.2 /src/neutron-vpnaas
+ARG NEUTRON_VPNAAS_GIT_REF=1d1b1282542516a615eba90a25faf1e9b278fc55
+ADD --keep-git-dir=true https://opendev.org/openstack/neutron-vpnaas.git#${NEUTRON_VPNAAS_GIT_REF} /src/neutron-vpnaas
 RUN git -C /src/neutron-vpnaas fetch --unshallow
 RUN --mount=type=cache,mode=0755,target=/root/.cache/pip,sharing=private <<EOF bash -xe
 pip3 install \