diff --git a/test/integration/private_zonal_with_networking/testdata/TestPrivateZonalWithNetworking.json b/test/integration/private_zonal_with_networking/testdata/TestPrivateZonalWithNetworking.json
index 1f8e8b4930..be8e567356 100755
--- a/test/integration/private_zonal_with_networking/testdata/TestPrivateZonalWithNetworking.json
+++ b/test/integration/private_zonal_with_networking/testdata/TestPrivateZonalWithNetworking.json
@@ -211,6 +211,10 @@
         "minNodeCount": 1
       },
       "config": {
+        "bootDisk": {
+          "diskType": "pd-standard",
+          "sizeGb": "100"
+        },
         "diskSizeGb": 100,
         "diskType": "pd-standard",
         "effectiveCgroupMode": "EFFECTIVE_CGROUP_MODE_V2",