diff --git a/playbooks/legacy/grenade-dsvm-ironic-multinode-multitenant/run.yaml b/playbooks/legacy/grenade-dsvm-ironic-multinode-multitenant/run.yaml
index 800990e2..576a1419 100644
--- a/playbooks/legacy/grenade-dsvm-ironic-multinode-multitenant/run.yaml
+++ b/playbooks/legacy/grenade-dsvm-ironic-multinode-multitenant/run.yaml
@@ -43,6 +43,7 @@
           export DEVSTACK_GATE_TEMPEST_BAREMETAL_BUILD_TIMEOUT=1200
           export DEVSTACK_LOCAL_CONFIG+=$'\n'"IRONIC_BUILD_DEPLOY_RAMDISK=False"
           export DEVSTACK_GATE_TLSPROXY=0
+          export BUILD_TIMEOUT
 
           EOF
         chdir: '{{ ansible_user_dir }}/workspace'
diff --git a/playbooks/legacy/grenade-dsvm-ironic/run.yaml b/playbooks/legacy/grenade-dsvm-ironic/run.yaml
index cdde681c..1c45a1b1 100644
--- a/playbooks/legacy/grenade-dsvm-ironic/run.yaml
+++ b/playbooks/legacy/grenade-dsvm-ironic/run.yaml
@@ -42,6 +42,7 @@
           export DEVSTACK_GATE_TEMPEST_BAREMETAL_BUILD_TIMEOUT=1200
           export DEVSTACK_LOCAL_CONFIG+=$'\n'"IRONIC_BUILD_DEPLOY_RAMDISK=False"
           export DEVSTACK_GATE_TLSPROXY=0
+          export BUILD_TIMEOUT
 
           EOF
         chdir: '{{ ansible_user_dir }}/workspace'