diff --git a/zuul.d/ironic-lib-jobs.yaml b/zuul.d/ironic-lib-jobs.yaml
index 38fdbcec..23c47a39 100644
--- a/zuul.d/ironic-lib-jobs.yaml
+++ b/zuul.d/ironic-lib-jobs.yaml
@@ -14,11 +14,11 @@
     required-projects:
       - openstack/ironic-lib
     vars:
+      tempest_test_timeout: 1800
       devstack_localrc:
         BUILD_TIMEOUT: 900
         IRONIC_BUILD_DEPLOY_RAMDISK: True
         IRONIC_TEMPEST_BUILD_TIMEOUT: 900
-        IRONIC_VM_SPECS_RAM: 2048
 
 - job:
     name: ironic-lib-wholedisk-bios-ipmi-direct-src